WO2020182932A1 - Nouvelles signatures géniques pour prédire le temps de survie chez des patients souffrant d'un carcinome à cellules rénales - Google Patents

Nouvelles signatures géniques pour prédire le temps de survie chez des patients souffrant d'un carcinome à cellules rénales Download PDF

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WO2020182932A1
WO2020182932A1 PCT/EP2020/056605 EP2020056605W WO2020182932A1 WO 2020182932 A1 WO2020182932 A1 WO 2020182932A1 EP 2020056605 W EP2020056605 W EP 2020056605W WO 2020182932 A1 WO2020182932 A1 WO 2020182932A1
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patient
rcc
determining
sample
gene
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PCT/EP2020/056605
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Andreas Bikfalvi
Lindsay COOLEY
Justine RUDEWICZ
Marie NIKOLSKI
Wilfried SOULEYREAU
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INSERM (Institut National de la Santé et de la Recherche Médicale)
Université De Bordeaux
Centre National De La Recherche Scientifique (Cnrs)
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Publication of WO2020182932A1 publication Critical patent/WO2020182932A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
    • C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
    • C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
    • C12Q1/6886—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material for cancer
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q2600/00—Oligonucleotides characterized by their use
    • C12Q2600/118—Prognosis of disease development
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q2600/00—Oligonucleotides characterized by their use
    • C12Q2600/158—Expression markers

Definitions

  • the present relates to new gene signatures that are suitable for predicting survival time in patients suffering from renal cell carcinoma (RCC).
  • RRC renal cell carcinoma
  • Renal Cell Carcinoma encompasses a heterogeneous group of cancers derived from renal tubular epithelial cells and has a worldwide mortality of over 140,000 people per year.
  • the disease encompasses multiple histological and molecular subtypes, of which clear cell RCC (ccRCC) is the most common.
  • ccRCC clear cell RCC
  • the incidence and prevalence of RCC are rising, along with increases in related risk factors such as hypertension, diabetes and obesity 1 .
  • mortality rates have barely improved over the last 20 years according to Surveillance, Epidemiology and End Results (SEER) data.
  • SEER Surveillance, Epidemiology and End Results
  • the challenges associated with treatment of RCC include high levels of resistance to traditional chemotherapeutic drugs 8 .
  • the majority of currently available targeted therapies focus on inhibiting angiogenesis driven by the VEGF/VEGFR axis 9 . While progress has been made at extending life somewhat, such therapies are rarely curative, and will act primarily to “inhibit” the disease making eventual drug resistance almost inevitable. The high cost and failure rate of this approach is significant.
  • Second line treatments include mTOR inhibitors and immunotherapeutic agents 10 . These can be successful, but are effective for only a limited subset of patients 11 .
  • the pathophysiology of RCC still far from understood, and there is a clear need to identify key mechanisms in RCC progression in order to open up novel therapeutic avenues targeting different aspects of RCC biology.
  • the present relates to new gene signatures that are suitable for predicting survival time in patients suffering from renal cell carcinoma (RCC).
  • RRC renal cell carcinoma
  • An object of the present invention relates to a method for predicting the survival time of a patient suffering from a renal cell carcinoma (RCC) comprising determining the expression level of at least one gene in a sample obtained from the patient wherein said gene is selected from the group consisting of ATP 1 A3, AVIL, CCL8, CES2, CFB, COL6A3, CRABP2, DNAJC12, F3, FAIM2, IL2RG, IL34, KRT13, KRT17, LRG1, MAGEB1, MAGEB2, MAGEC2, MAGEC3, MMP3, NAT8, PLAC, PPARGC1A, PPEF1, PTGIR, PTPN14, RAC2, SAA1, SAA2, SAMSN1, SERPINA3, SLC11A1, SLC2A3, TPRG1, TSPAN32, UCK2, WAS, WT1, BASP1, DPYSL3, GLIPR2, HMGA2, RAB15, SNAI2 and PCBP3.
  • RCC renal cell carcinoma
  • the method of the present invention comprising determining the expression levels of KRT13, LRG1, SAA2, SAA1, SAMSN1, SERPINA3, SLC2A3, UCK2, and WT1 in the sample obtained from the patient.
  • the method of the present invention comprising determining the expression levels of NAT8, PPARGC1A, TPRG1, and WAS in the sample obtained from the patient.
  • the method of the present invention comprising determining the expression level of ATP 1 A3 in the sample obtained from the patient. In some embodiments, the method of the present invention comprising determining the expression levels of AVIL, CES2, FAIM2, KRT17, PTGIR, and RAC2 in the sample obtained from the patient.
  • the method of the present invention comprising determining the expression levels of MAGEC2, MAGEC3, CCL8, CFB, COL6A3, DNAJC12, IL2RG, IL34, and PLAC8 in the sample obtained from the patient.
  • the method of the present invention comprising determining the expression levels of BASP1, DPYSL3, GLIPR2, HMGA2, RAB15, SNAI2, and PCBP3 in the sample obtained from the patient.
  • the term“renal cell carcinoma” or“RCC” has its general meaning in the art and refers to refers to a cancer originated from the renal tubular epithelial cells in the kidney. According to the pathological features, the cancer is classified into clear cell type, granular cell type, chromophobe type, spindle type, cyst-associated type, cyst-originating type, cystic type, or papillary type.
  • the renal cell carcinoma (RCC) is at Stage I, II, III, or IV as determined by the TNM classification, but however the present invention is accurately useful for predicting the survival time of patients when said cancer has been classified as Stage II or III by the TNM classification, i.e. non metastatic renal cell carcinoma (RCC).
  • the method of the present invention is particularly suitable for predicting the duration of the overall survival (OS), progression-free survival (PFS) and/or the disease-free survival (DFS) of the cancer patient.
  • OS survival time is generally based on and expressed as the percentage of people who survive a certain type of cancer for a specific amount of time. Cancer statistics often use an overall five-year survival rate. In general, OS rates do not specify whether cancer survivors are still undergoing treatment at five years or if they've become cancer-free (achieved remission). DSF gives more specific information and is the number of people with a particular cancer who achieve remission.
  • progression-free survival (PFS) rates (the number of people who still have cancer, but their disease does not progress) includes people who may have had some success with treatment, but the cancer has not disappeared completely.
  • the expression“short survival time” indicates that the patient will have a survival time that will be lower than the median (or mean) observed in the general population of patients suffering from said cancer. When the patient will have a short survival time, it is meant that the patient will have a“poor prognosis”.
  • the expression“long survival time” indicates that the patient will have a survival time that will be higher than the median (or mean) observed in the general population of patients suffering from said cancer. When the patient will have a long survival time, it is meant that the patient will have a“good prognosis”.
  • the sample is a tissue tumor sample.
  • tissue sample means any tissue tumor sample derived from the patient. Said tissue sample is obtained for the purpose of the in vitro evaluation.
  • the tumor sample may result from the tumor resected from the patient.
  • the tumor sample may result from a biopsy performed in the primary tumour of the patient or performed in metastatic sample distant from the primary tumor of the patient.
  • the tumor tissue sample encompasses (i) a global primary tumor (as a whole), (ii) a tissue sample from the centre of the tumor, (iii) lymphoid islets in close proximity with the tumor, (iv) the lymph nodes located at the closest proximity of the tumor, (v) a tumor tissue sample collected prior surgery (for follow up of patients after treatment for example), and (vi) a distant metastasis.
  • the tumor tissue sample encompasses pieces or slices of tissue that have been removed from the tumor, including following a surgical tumor resection or following the collection of a tissue sample for biopsy, for further quantification of several expression levels of different genes, notably through histology or immunohistochemistry methods, through flow cytometry methods and through methods of gene or protein expression analysis, including genomic and proteomic analysis.
  • the tumor tissue sample can, of course, be subjected to a variety of well-known post collection preparative and storage techniques (e.g., fixation, storage, freezing, etc.).
  • the sample can be fresh, frozen, fixed (e.g., formalin fixed), or embedded (e.g., paraffin embedded).
  • each of the genes of interest i.e. ATP1A3, AVIL, CCL8, CES2, CFB, COL6A3, CRABP2, DNAJC12, F3, FAIM2, IL2RG, IL34, KRT13, KRT17, LRG1, MAGEB1, MAGEB2, MAGEC2, MAGEC3, MMP3, NAT8, PLAC, PPARGCIA, PPEF1, PTGIR, PTPN14, RAC2, SAA1, SAA2, SAMSN1, SERPINA3, SLC11A1, SLC2A3, TPRG1, TSPAN32, UCK2, WAS, DPYSL3, GLIPR2, HMGA2, RAB15, SNAI2, PCBP3 and WT1) refers to the internationally recognized name of the corresponding gene, as found in internationally recognized gene sequences and protein sequences databases, including in the database from the HUGO Gene Nomenclature Committee that is available notably at the following Internet address: http://www.gene.ucl.ac.uk
  • the name of each of the genes of interest may also refer to the internationally recognized name of the corresponding gene, as found in the internationally recognized gene sequences and protein sequences database Genbank. Through these internationally recognized sequence databases, the nucleic acid and the amino acid sequences corresponding to each of the gene of interest described herein may be retrieved by the one skilled in the art.
  • expression level refers, e.g., to a determined level of expression of gene of interest.
  • the expression level of expression indicates the amount of expression product in a sample.
  • the expression product of a gene of interest can be the nucleic acid of interest itself, a nucleic acid transcribed or derived therefrom, or the a polypeptide or protein derived therefrom.
  • the expression level of the gene is determined at nucleic acid level.
  • the expression level of a gene may be determined by determining the quantity of mRNA. Methods for determining the quantity of mRNA are well known in the art.
  • the nucleic acid contained in the samples e.g., cell or tissue prepared from the subject
  • the extracted mRNA is then detected by hybridization (e. g., Northern blot analysis, in situ hybridization) and/or amplification (e.g., RT-PCR).
  • Other methods of Amplification include ligase chain reaction (LCR), transcription-mediated amplification (TMA), strand displacement amplification (SDA) and nucleic acid sequence based amplification (NASB A).
  • Nucleic acids having at least 10 nucleotides and exhibiting sequence complementarity or homology to the mRNA of interest herein find utility as hybridization probes or amplification primers. It is understood that such nucleic acids need not be identical, but are typically at least about 80% identical to the homologous region of comparable size, more preferably 85% identical and even more preferably 90-95% identical. In some embodiments, it will be advantageous to use nucleic acids in combination with appropriate means, such as a detectable label, for detecting hybridization.
  • the nucleic acid probes include one or more labels, for example to permit detection of a target nucleic acid molecule using the disclosed probes.
  • a nucleic acid probe includes a label (e.g., a detectable label).
  • A“detectable label” is a molecule or material that can be used to produce a detectable signal that indicates the presence or concentration of the probe (particularly the bound or hybridized probe) in a sample.
  • a labeled nucleic acid molecule provides an indicator of the presence or concentration of a target nucleic acid sequence (e.g., genomic target nucleic acid sequence) (to which the labeled uniquely specific nucleic acid molecule is bound or hybridized) in a sample.
  • a label associated with one or more nucleic acid molecules can be detected either directly or indirectly.
  • a label can be detected by any known or yet to be discovered mechanism including absorption, emission and / or scattering of a photon (including radio frequency, microwave frequency, infrared frequency, visible frequency and ultra-violet frequency photons).
  • Detectable labels include colored, fluorescent, phosphorescent and luminescent molecules and materials, catalysts (such as enzymes) that convert one substance into another substance to provide a detectable difference (such as by converting a colorless substance into a colored substance or vice versa, or by producing a precipitate or increasing sample turbidity), haptens that can be detected by antibody binding interactions, and paramagnetic and magnetic molecules or materials.
  • detectable labels include fluorescent molecules (or fluorochromes).
  • fluorescent molecules or fluorochromes
  • Numerous fluorochromes are known to those of skill in the art, and can be selected, for example from Life Technologies (formerly Invitrogen), e.g., see, The Handbook— A Guide to Fluorescent Probes and Labeling Technologies).
  • fluorophores that can be attached (for example, chemically conjugated) to a nucleic acid molecule (such as a uniquely specific binding region) are provided in U.S. Pat. No.
  • Nazarenko et ah such as 4-acetamido-4'-isothiocyanatostilbene-2,2' disulfonic acid, acridine and derivatives such as acridine and acridine isothiocyanate, 5-(2'-aminoethyl) aminonaphthalene-1 -sulfonic acid (EDANS), 4-amino -N- [3 vinylsulfonyl)phenyl]naphthalimide-3,5 disulfonate (Lucifer Yellow VS), N-(4-anilino-l- naphthyl)maleimide, antllranilamide, Brilliant Yellow, coumarin and derivatives such as coumarin, 7-amino-4-methylcoumarin (AMC, Coumarin 120), 7-amino-4- trifluoromethylcouluarin (Coumarin 151); cyanosine; 4',6-diaminidino-2-pheny
  • fluorophores include thiol-reactive europium chelates which emit at approximately 617 mn (Heyduk and Heyduk, Analyt. Biochem. 248:216-27, 1997; J. Biol. Chem. 274:3315-22, 1999), as well as GFP, LissamineTM, diethylaminocoumarin, fluorescein chlorotriazinyl, naphthofluorescein, 4,7-dichlororhodamine and xanthene (as described in U.S. Pat. No. 5,800,996 to Lee et al.) and derivatives thereof.
  • fluorophores known to those skilled in the art can also be used, for example those available from Life Technologies (Invitrogen; Molecular Probes (Eugene, Oreg.)) and including the ALEXA FLUOR® series of dyes (for example, as described in U.S. Pat. Nos. 5,696,157, 6, 130, 101 and 6,716,979), the BODIPY series of dyes (dipyrrometheneboron difluoride dyes, for example as described in U.S. Pat. Nos.
  • a fluorescent label can be a fluorescent nanoparticle, such as a semiconductor nanocrystal, e.g., a QUANTUM DOTTM (obtained, for example, from Life Technologies (QuantumDot Corp, Invitrogen Nanocrystal Technologies, Eugene, Oreg.); see also, U.S. Pat. Nos. 6,815,064; 6,682,596; and 6,649, 138).
  • Semiconductor nanocrystals are microscopic particles having size-dependent optical and/or electrical properties.
  • Semiconductor nanocrystals that can he coupled to a variety of biological molecules (including dNTPs and/or nucleic acids) or substrates by techniques described in, for example, Bruchez et al, Science 281 :20132016, 1998; Chan et ak, Science 281 :2016-2018, 1998; and U.S. Pat. No. 6,274,323. Formation of semiconductor nanocrystals of various compositions are disclosed in, e.g., U.S. Pat. Nos.
  • quantum dots that emit light at different wavelengths based on size (565 mn, 655 mn, 705 mn, or 800 mn emission wavelengths), which are suitable as fluorescent labels in the probes disclosed herein are available from Life Technologies (Carlshad, Calif.).
  • Additional labels include, for example, radioisotopes (such as 3 H), metal chelates such as DOTA and DPTA chelates of radioactive or paramagnetic metal ions like Gd3+, and liposomes.
  • radioisotopes such as 3 H
  • metal chelates such as DOTA and DPTA chelates of radioactive or paramagnetic metal ions like Gd3+
  • liposomes include, for example, radioisotopes (such as 3 H), metal chelates such as DOTA and DPTA chelates of radioactive or paramagnetic metal ions like Gd3+, and liposomes.
  • Detectable labels that can he used with nucleic acid molecules also include enzymes, for example horseradish peroxidase, alkaline phosphatase, acid phosphatase, glucose oxidase,
  • an enzyme can he used in a metallographic detection scheme.
  • SISH silver in situ hyhridization
  • Metallographic detection methods include using an enzyme, such as alkaline phosphatase, in combination with a water-soluble metal ion and a redox-inactive substrate of the enzyme. The substrate is converted to a redox-active agent by the enzyme, and the redoxactive agent reduces the metal ion, causing it to form a detectable precipitate.
  • Metallographic detection methods also include using an oxido-reductase enzyme (such as horseradish peroxidase) along with a water soluble metal ion, an oxidizing agent and a reducing agent, again to form a detectable precipitate.
  • an oxido-reductase enzyme such as horseradish peroxidase
  • Probes made using the disclosed methods can be used for nucleic acid detection, such as ISH procedures (for example, fluorescence in situ hybridization (FISH), chromogenic in situ hybridization (CISH) and silver in situ hybridization (SISH)) or comparative genomic hybridization (CGH).
  • ISH procedures for example, fluorescence in situ hybridization (FISH), chromogenic in situ hybridization (CISH) and silver in situ hybridization (SISH)
  • CGH comparative genomic hybridization
  • ISH In situ hybridization
  • a sample containing target nucleic acid sequence e.g., genomic target nucleic acid sequence
  • a metaphase or interphase chromosome preparation such as a cell or tissue sample mounted on a slide
  • a labeled probe specifically hybridizable or specific for the target nucleic acid sequence (e.g., genomic target nucleic acid sequence).
  • the slides are optionally pretreated, e.g., to remove paraffin or other materials that can interfere with uniform hybridization.
  • the sample and the probe are both treated, for example by heating to denature the double stranded nucleic acids.
  • the probe (formulated in a suitable hybridization buffer) and the sample are combined, under conditions and for sufficient time to permit hybridization to occur (typically to reach equilibrium).
  • the chromosome preparation is washed to remove excess probe, and detection of specific labeling of the chromosome target is performed using standard techniques.
  • a biotinylated probe can be detected using fluorescein-labeled avidin or avi din-alkaline phosphatase.
  • fluorescein-labeled avidin or avi din-alkaline phosphatase.
  • the fluorochrome can be detected directly, or the samples can be incubated, for example, with fluorescein isothiocyanate (FITC)- conjugated avidin.
  • FITC fluorescein isothiocyanate
  • Amplification of the FITC signal can be effected, if necessary, by incubation with biotin-conjugated goat antiavidin antibodies, washing and a second incubation with FITC- conjugated avidin.
  • samples can be incubated, for example, with streptavidin, washed, incubated with biotin-conjugated alkaline phosphatase, washed again and pre-equilibrated (e.g., in alkaline phosphatase (AP) buffer).
  • AP alkaline phosphatase
  • Numerous reagents and detection schemes can be employed in conjunction with FISH, CISH, and SISH procedures to improve sensitivity, resolution, or other desirable properties.
  • probes labeled with fluorophores including fluorescent dyes and QUANTUM DOTS®
  • fluorophores including fluorescent dyes and QUANTUM DOTS®
  • the probe can be labeled with a nonfluorescent molecule, such as a hapten (such as the following non limiting examples: biotin, digoxigenin, DNP, and various oxazoles, pyrrazoles, thiazoles, nitroaryls, benzofurazans, triterpenes, ureas, thioureas, rotenones, coumarin, courmarin-based compounds, Podophyllotoxin, Podophyllotoxin-based compounds, and combinations thereof), ligand or other indirectly detectable moiety.
  • a hapten such as the following non limiting examples: biotin, digoxigenin, DNP, and various oxazoles, pyrrazoles, thiazoles, nitroaryls, benzofurazans, triterpenes, ureas, thioureas, rotenones, coumarin, courmarin-based compounds, Podophyllotoxin, Podo
  • Probes labeled with such non-fluorescent molecules (and the target nucleic acid sequences to which they bind) can then be detected by contacting the sample (e.g., the cell or tissue sample to which the probe is bound) with a labeled detection reagent, such as an antibody (or receptor, or other specific binding partner) specific for the chosen hapten or ligand.
  • a labeled detection reagent such as an antibody (or receptor, or other specific binding partner) specific for the chosen hapten or ligand.
  • the detection reagent can be labeled with a fluorophore (e.g., QUANTUM DOT®) or with another indirectly detectable moiety, or can be contacted with one or more additional specific binding agents (e.g., secondary or specific antibodies), which can be labeled with a fluorophore.
  • the probe, or specific binding agent (such as an antibody, e.g., a primary antibody, receptor or other binding agent) is labeled with an enzyme that is capable of converting a fluorogenic or chromogenic composition into a detectable fluorescent, colored or otherwise detectable signal (e.g., as in deposition of detectable metal particles in SISH).
  • the enzyme can be attached directly or indirectly via a linker to the relevant probe or detection reagent. Examples of suitable reagents (e.g., binding reagents) and chemistries (e.g., linker and attachment chemistries) are described in U.S. Patent Application Publication Nos. 2006/0246524; 2006/0246523, and 2007/ 01 17153.
  • multiplex detection schemes can he produced to facilitate detection of multiple target nucleic acid sequences (e.g., genomic target nucleic acid sequences) in a single assay (e.g., on a single cell or tissue sample or on more than one cell or tissue sample).
  • a first probe that corresponds to a first target sequence can he labelled with a first hapten, such as biotin, while a second probe that corresponds to a second target sequence can be labelled with a second hapten, such as DNP.
  • the bound probes can he detected by contacting the sample with a first specific binding agent (in this case avidin labelled with a first fluorophore, for example, a first spectrally distinct QUANTUM DOT®, e.g., that emits at 585 mn) and a second specific binding agent (in this case an anti-DNP antibody, or antibody fragment, labelled with a second fluorophore (for example, a second spectrally distinct QUANTUM DOT®, e.g., that emits at 705 mn).
  • a first specific binding agent in this case avidin labelled with a first fluorophore, for example, a first spectrally distinct QUANTUM DOT®, e.g., that emits at 585 mn
  • a second specific binding agent in this case an anti-DNP antibody, or antibody fragment, labelled with a second fluorophore (for example, a second spectrally distinct QUANTUM DOT®,
  • Probes typically comprise single-stranded nucleic acids of between 10 to 1000 nucleotides in length, for instance of between 10 and 800, more preferably of between 15 and 700, typically of between 20 and 500.
  • Primers typically are shorter single- stranded nucleic acids, of between 10 to 25 nucleotides in length, designed to perfectly or almost perfectly match a nucleic acid of interest, to be amplified.
  • the probes and primers are“specific” to the nucleic acids they hybridize to, i.e. they preferably hybridize under high stringency hybridization conditions (corresponding to the highest melting temperature Tm, e.g., 50 % formamide, 5x or 6x SCC.
  • SCC is a 0.15 M NaCl, 0.015 M Na-citrate).
  • the nucleic acid primers or probes used in the above amplification and detection method may be assembled as a kit.
  • a kit includes consensus primers and molecular probes.
  • a preferred kit also includes the components necessary to determine if amplification has occurred.
  • the kit may also include, for example, PCR buffers and enzymes; positive control sequences, reaction control primers; and instructions for amplifying and detecting the specific sequences.
  • the methods of the invention comprise the steps of providing total RNAs extracted from cumulus cells and subjecting the RNAs to amplification and hybridization to specific probes, more particularly by means of a quantitative or semi- quantitative RT-PCR.
  • the level is determined by DNA chip analysis.
  • DNA chip or nucleic acid microarray consists of different nucleic acid probes that are chemically attached to a substrate, which can be a microchip, a glass slide or a microsphere-sized bead.
  • a microchip may be constituted of polymers, plastics, resins, polysaccharides, silica or silica-based materials, carbon, metals, inorganic glasses, or nitrocellulose.
  • Probes comprise nucleic acids such as cDNAs or oligonucleotides that may be about 10 to about 60 base pairs.
  • a sample from a test subject optionally first subjected to a reverse transcription, is labelled and contacted with the microarray in hybridization conditions, leading to the formation of complexes between target nucleic acids that are complementary to probe sequences attached to the microarray surface.
  • the labelled hybridized complexes are then detected and can be quantified or semi-quantified. Labelling may be achieved by various methods, e.g. by using radioactive or fluorescent labelling.
  • Many variants of the microarray hybridization technology are available to the man skilled in the art (see e.g. the review by Hoheisel, Nature Reviews, Genetics, 2006, 7:200-210).
  • the nCounter® Analysis system is used to detect intrinsic gene expression.
  • the basis of the nCounter® Analysis system is the unique code assigned to each nucleic acid target to be assayed (International Patent Application Publication No. WO 08/124847, U.S. Patent No. 8,415,102 and Geiss et al. Nature Biotechnology. 2008. 26(3): 317- 325; the contents of which are each incorporated herein by reference in their entireties).
  • the code is composed of an ordered series of colored fluorescent spots which create a unique barcode for each target to be assayed.
  • a pair of probes is designed for each DNA or RNA target, a biotinylated capture probe and a reporter probe carrying the fluorescent barcode.
  • the reporter probe can comprise at a least a first label attachment region to which are attached one or more label monomers that emit light constituting a first signal; at least a second label attachment region, which is non-over-lapping with the first label attachment region, to which are attached one or more label monomers that emit light constituting a second signal; and a first target- specific sequence.
  • each sequence specific reporter probe comprises a target specific sequence capable of hybridizing to no more than one gene and optionally comprises at least three, or at least four label attachment regions, said attachment regions comprising one or more label monomers that emit light, constituting at least a third signal, or at least a fourth signal, respectively.
  • the capture probe can comprise a second target-specific sequence; and a first affinity tag.
  • the capture probe can also comprise one or more label attachment regions.
  • the first target- specific sequence of the reporter probe and the second target- specific sequence of the capture probe hybridize to different regions of the same gene to be detected. Reporter and capture probes are all pooled into a single hybridization mixture, the "probe library".
  • the relative abundance of each target is measured in a single multiplexed hybridization reaction.
  • the method comprises contacting the tissue sample with a probe library, such that the presence of the target in the sample creates a probe pair - target complex.
  • the complex is then purified. More specifically, the sample is combined with the probe library, and hybridization occurs in solution.
  • the tripartite hybridized complexes are purified in a two-step procedure using magnetic beads linked to oligonucleotides complementary to universal sequences present on the capture and reporter probes. This dual purification process allows the hybridization reaction to be driven to completion with a large excess of target-specific probes, as they are ultimately removed, and, thus, do not interfere with binding and imaging of the sample.
  • All post hybridization steps are handled robotically on a custom liquid-handling robot (Prep Station, NanoString Technologies).
  • Purified reactions are typically deposited by the Prep Station into individual flow cells of a sample cartridge, bound to a streptavidin-coated surface via the capture probe, el ectrophoresed to elongate the reporter probes, and immobilized.
  • the sample cartridge is transferred to a fully automated imaging and data collection device (Digital Analyzer, NanoString Technologies).
  • the expression level of a target is measured by imaging each sample and counting the number of times the code for that target is detected. For each sample, typically 600 fields-of-view (FOV) are imaged (1376 X 1024 pixels) representing approximately 10 mm2 of the binding surface.
  • FOV fields-of-view
  • Typical imaging density is 100- 1200 counted reporters per field of view depending on the degree of multiplexing, the amount of sample input, and overall target abundance. Data is output in simple spreadsheet format listing the number of counts per target, per sample.
  • This system can be used along with nanoreporters. Additional disclosure regarding nanoreporters can be found in International Publication No. WO 07/076129 and W007/076132, and US Patent Publication No. 2010/0015607 and 2010/0261026, the contents of which are incorporated herein in their entireties. Further, the term nucleic acid probes and nanoreporters can include the rationally designed (e.g. synthetic sequences) described in International Publication No. WO 2010/019826 and US Patent Publication No.2010/0047924, incorporated herein by reference in its entirety.
  • Level of a gene may be expressed as absolute level or normalized level. Typically, levels are normalized by correcting the absolute level of a gene by comparing its expression to the expression of a gene that is not a relevant for determining the risk. This normalization allows the comparison of the level in one sample, e.g., a subject sample, to another sample, or between samples from different sources.
  • a score which is a composite of the expression levels of the different genes is determined and compared to a predetermined reference value wherein a difference between said score and said predetermined reference value is indicative whether the subject will have a long or short survival time.
  • the score can be calculated in any appropriate manner, such as principal components analysis, support vector machines, or other techniques known to the person of ordinary skill in the art having the benefit of the present disclosure.
  • the predetermined reference value is a threshold value or a cut off value.
  • a “threshold value” or “cut-off value” can be determined experimentally, empirically, or theoretically.
  • a threshold value can also be arbitrarily selected based upon the existing experimental and/or clinical conditions, as would be recognized by a person of ordinary skilled in the art. For example, retrospective measurement of the score in properly banked historical subject samples may be used in establishing the predetermined reference value.
  • the threshold value has to be determined in order to obtain the optimal sensitivity and specificity according to the function of the test and the benefit/risk balance (clinical consequences of false positive and false negative).
  • the optimal sensitivity and specificity can be determined using a Receiver Operating Characteristic (ROC) curve based on experimental data. For example, after determining the score in a group of reference, one can use algorithmic analysis for the statistic treatment of the measured expression levels of the gene(s) in samples to be tested, and thus obtain a classification standard having significance for sample classification.
  • ROC curve Receiver Operating Characteristic
  • receiver operator characteristic curve which is also known as receiver operation characteristic curve. It is mainly used for clinical biochemical diagnostic tests.
  • ROC curve is a comprehensive indicator that reflects the continuous variables of true positive rate (sensitivity) and false positive rate (1-specificity). It reveals the relationship between sensitivity and specificity with the image composition method.
  • a series of different cut-off values are set as continuous variables to calculate a series of sensitivity and specificity values. Then sensitivity is used as the vertical coordinate and specificity is used as the horizontal coordinate to draw a curve. The higher the area under the curve (AUC), the higher the accuracy of diagnosis.
  • AUC area under the curve
  • the point closest to the far upper left of the coordinate diagram is a critical point having both high sensitivity and high specificity values.
  • the AUC value of the ROC curve is between 1.0 and 0.5. When AUC>0.5, the diagnostic result gets better and better as AUC approaches 1. When AUC is between 0.5 and 0.7, the accuracy is low. When AUC is between 0.7 and 0.9, the accuracy is moderate.
  • the predetermined reference value is determined by carrying out a method comprising the steps of a) providing a collection of samples; b) providing, for each sample provided at step a), information relating to the actual clinical outcome for the corresponding subject (i.e.
  • the score has been assessed for 100 samples of 100 patients.
  • the 100 samples are ranked according to the determined score.
  • Sample 1 has the highest score and sample 100 has the lowest score.
  • a first grouping provides two subsets: on one side sample Nr 1 and on the other side the 99 other samples.
  • the next grouping provides on one side samples 1 and 2 and on the other side the 98 remaining samples etc., until the last grouping: on one side samples 1 to 99 and on the other side sample Nr 100.
  • Kaplan Meier curves are prepared for each of the 99 groups of two subsets. Also for each of the 99 groups, the p value between both subsets was calculated.
  • the predetermined reference value is then selected such as the discrimination based on the criterion of the minimum p value is the strongest.
  • the score corresponding to the boundary between both subsets for which the p value is minimum is considered as the predetermined reference value.
  • a score that is higher than the predetermined reference value indicates that the patient will have a short survival time and a score that is lower than the predetermined reference value indicates that the patient will have a long survival time.
  • the predetermined reference value thus allows discrimination between a poor and a good prognosis for a patient.
  • high statistical significance values e.g. low P values
  • a range of values is provided. Therefore, a minimal statistical significance value (minimal threshold of significance, e.g. maximal threshold P value) is arbitrarily set and a range of a plurality of arbitrary quantification values for which the statistical significance value calculated at step g) is higher (more significant, e.g. lower P value) are retained, so that a range of quantification values is provided.
  • This range of quantification values includes a "cut-off value as described above.
  • the outcome can be determined by comparing the calculated score with the range of values which are identified.
  • a cut-off value thus consists of a range of quantification values, e.g. centered on the quantification value for which the highest statistical significance value is found (e.g. generally the minimum p value which is found). For example, on a hypothetical scale of 1 to 10, if the ideal cut-off value (the value with the highest statistical significance) is 5, a suitable (exemplary) range may be from 4-6.
  • a patient may be assessed by comparing values obtained by measuring the calculated score, where values higher than 5 reveal a poor prognosis and values less than 5 reveal a good prognosis.
  • a patient may be assessed by comparing values obtained by measuring the calculated score and comparing the values on a scale, where values above the range of 4-6 indicate a poor prognosis and values below the range of 4-6 indicate a good prognosis, with values falling within the range of 4-6 indicating an intermediate occurrence (or prognosis).
  • CES2, NAT8, PPARGCl A, and PTPN14 correlates with a good prognosis.
  • the method of the invention comprises the use of a classification algorithm typically selected from Linear Discriminant Analysis (LDA), Topological Data Analysis (TDA), Neural Networks, Support Vector Machine (SVM) algorithm and Random Forests algorithm (RF) such as described in the Example.
  • a classification algorithm typically selected from Linear Discriminant Analysis (LDA), Topological Data Analysis (TDA), Neural Networks, Support Vector Machine (SVM) algorithm and Random Forests algorithm (RF) such as described in the Example.
  • the method of the invention comprises the step of determining the patient’s survival using a classification algorithm.
  • the term “classification algorithm” has its general meaning in the art and refers to classification and regression tree methods and multivariate classification well known in the art such as described in US 8, 126,690; WO2008/156617.
  • the term “support vector machine (SVM)” is a universal learning machine useful for pattern recognition, whose decision surface is parameterized by a set of support vectors and a set of corresponding weights, refers to a method of not separately processing, but simultaneously processing a plurality of variables.
  • the support vector machine is useful as a statistical tool for classification.
  • the support vector machine non-linearly maps its n-dimensional input space into a high dimensional feature space, and presents an optimal interface (optimal parting plane) between features.
  • the support vector machine comprises two phases: a training phase and a testing phase.
  • a training phase support vectors are produced, while estimation is performed according to a specific rule in the testing phase.
  • SVMs provide a model for use in classifying each of n subjects to two or more disease categories based on one k-dimensional vector (called a k-tuple) of biomarker measurements per subject.
  • An SVM first transforms the k-tuples using a kernel function into a space of equal or higher dimension.
  • the kernel function projects the data into a space where the categories can be better separated using hyperplanes than would be possible in the original data space.
  • a set of support vectors, which lie closest to the boundary between the disease categories may be chosen.
  • a hyperplane is then selected by known SVM techniques such that the distance between the support vectors and the hyperplane is maximal within the bounds of a cost function that penalizes incorrect predictions.
  • This hyperplane is the one which optimally separates the data in terms of prediction (Vapnik, 1998 Statistical Learning Theory. New York: Wiley). Any new observation is then classified as belonging to any one of the categories of interest, based where the observation lies in relation to the hyperplane. When more than two categories are considered, the process is carried out pairwise for all of the categories and those results combined to create a rule to discriminate between all the categories.
  • Random Forests algorithm As used herein, the term “Random Forests algorithm” or “RF” has its general meaning in the art and refers to classification algorithm such as described in US 8,126,690; WO2008/156617. Random Forest is a decision-tree-based classifier that is constructed using an algorithm originally developed by Leo Breiman (Breiman L, "Random forests,” Machine Learning 2001, 45:5-32). The classifier uses a large number of individual decision trees and decides the class by choosing the mode of the classes as determined by the individual trees.
  • the individual trees are constructed using the following algorithm: (1) Assume that the number of cases in the training set is N, and that the number of variables in the classifier is M; (2) Select the number of input variables that will be used to determine the decision at a node of the tree; this number, m should be much less than M; (3) Choose a training set by choosing N samples from the training set with replacement; (4) For each node of the tree randomly select m of the M variables on which to base the decision at that node; (5) Calculate the best split based on these m variables in the training set.
  • the score is generated by a computer program.
  • the method of the present invention comprises a) quantifying the level of a plurality of genes in the sample; b) implementing a classification algorithm on data comprising the quantified plurality of genes so as to obtain an algorithm output; c) determining the survival time from the algorithm output of step b).
  • the algorithm of the present invention can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output.
  • the algorithm can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).
  • processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer.
  • a processor will receive instructions and data from a read-only memory or a random access memory or both.
  • the essential elements of a computer are a processor for performing instructions and one or more memory devices for storing instructions and data.
  • a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical disks, or optical disks.
  • data e.g., magnetic, magneto-optical disks, or optical disks.
  • a computer need not have such devices.
  • a computer can be embedded in another device.
  • Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks.
  • processors and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.
  • a computer having a display device, e.g., in non-limiting examples, a CRT (cathode ray tube) or LCD (liquid crystal display) monitor, for displaying information to the user and a keyboard and a pointing device, e.g., a mouse or a trackball, by which the user can provide input to the computer.
  • a display device e.g., in non-limiting examples, a CRT (cathode ray tube) or LCD (liquid crystal display) monitor
  • keyboard and a pointing device e.g., a mouse or a trackball
  • feedback provided to the user can be any form of sensory feedback, e.g., visual feedback, auditory feedback, or tactile feedback; and input from the user can be received in any form, including acoustic, speech, or tactile input.
  • the algorithm can be implemented in a computing system that includes a back-end component, e.g., as a data server, or that includes a middleware component, e.g., an application server, or that includes a front-end component, e.g., a client computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the invention, or any combination of one or more such back-end, middleware, or front-end components.
  • the components of the system can be interconnected by any form or medium of digital data communication, e.g., a communication network. Examples of communication networks include a local area network (“LAN”) and a wide area network (“WAN”), e.g., the Internet.
  • the computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
  • the group of biomarkers as disclosed herein is useful for identifying patients with poor-prognosis, in particular patients with localized RCCs that are likely to relapse and metastasize. Accordingly, subject identified with a poor prognosis can be administered therapy, for example systematic therapy.
  • the method of the present invention be used to identify patients in need of frequent follow-up by a physician or clinician to monitor RCC disease progression. Screening patients for identifying patients having a poor prognosis using the group of The biomarkers as disclosed herein is also useful to identify patients most suitable or amenable to be enrolled in clinical trial for assessing a therapy for RCC, which will permit more effective subgroup analyses and follow-up studies.
  • the expression of the group of biomarkers as disclosed herein can be monitored in patients enrolled in a clinical trial to provide a quantitative measure for the therapeutic efficacy of the therapy which is subject to the clinical trial.
  • This invention also provides a method for selecting a therapeutic regimen or determining if a certain therapeutic regimen is more appropriate for a patient identified as having a poor prognosis as identified by the methods as disclosed herein.
  • an aggressive anti-cancer therapeutic regime can be perused in which a patient having a poor prognosis, where the patient is administered a therapeutically effective amount of an anti-cancer agent to treat the RCC.
  • a patient can be monitored for RCC using the methods and biomarkers as disclosed herein, and if on a first (i.e. initial) testing the patient is identified as having a poor prognosis, the patient can be administered an anti-cancer therapy, and on a second (i.e.
  • the patient is identified as having a good prognosis, the patient can be administered an anti-cancer therapy at a maintenance dose.
  • the method of the present invention is particularly suited to determining which patients will be responsive or experience a positive treatment outcome to a treatment.
  • a therapy is considered to“treat” RCC if it provides one or more of the following treatment outcomes: reduce or delay recurrence of the RCC after the initial therapy; increase median survival time or decrease metastases.
  • an anti-cancer therapy is, for example but not limited to administration of a chemotherapeutic agent, radiotherapy etc.
  • Such anti-cancer therapies are disclosed herein, as well as others that are well known by persons of ordinary skill in the art and are encompassed for use in the present invention.
  • anti-cancer agent or“anti-cancer drug” is any agent, compound or entity that would be capably of negatively affecting the cancer in the patient, for example killing cancer cells, inducing apoptosis in cancer cells, reducing the growth rate of cancer cells, reducing the number of metastatic cells, reducing tumor size, inhibiting tumor growth, reducing blood supply to a tumor or cancer cells, promoting an immune response against cancer cells or a tumor, preventing or inhibiting the progression of cancer, or increasing the lifespan of the patient with cancer.
  • Anti-cancer therapy includes biological agents (biotherapy), chemotherapy agents, and radiotherapy agents.
  • the anti-cancer therapy includes a chemotherapeutic regimen further comprises radiation therapy.
  • the anti cancer treatment comprises the administration of a chemotherapeutic drug, alone or in combination with surgical resection of the tumor.
  • the treatment compresses radiation therapy and/or surgical resection of the tumor masses.
  • chemotherapeutic agent or“chemotherapy agent” are used interchangeably herein and refers to an agent that can be used in the treatment of RCC.
  • a chemotherapeutic agent can be in the form of a prodrug which can be activated to a cytotoxic form.
  • Chemotherapeutic agents are commonly known by persons of ordinary skill in the art and are encompassed for use in the present invention.
  • chemotherapeutic drugs include, but are not limited to: temozolomide (Temodar), procarbazine (Matulane), and lomustine (CCNU).
  • Chemotherapy given intravenously includes vincristine (Oncovin or Vincasar PFS), cisplatin (Platinol), carmustine (BCNU, BiCNU), and carboplatin (Paraplatin), Mexotrexate (Rheumatrex or Trexall), irinotecan (CPT-11); erlotinib; oxalipatin; anthracyclins-idarubicin and daunorubicin; doxorubicin; alkylating agents such as melphalan and chlorambucil; cis-platinum, methotrexate, and alkaloids such as vindesine and vinblastine.
  • the patients are administered wit anti-VEGF agents.
  • anti-VEGF agent refers to any compound or agent that produces a direct effect on the signaling pathways that promote growth, proliferation and survival of a cell by inhibiting the function of the VEGF protein, including inhibiting the function of VEGF receptor proteins.
  • agent or“compound” as used herein means any organic or inorganic molecule, including modified and unmodified nucleic acids such as antisense nucleic acids, RNAi agents such as siRNA or shRNA, peptides, peptidomimetics, receptors, ligands, and antibodies.
  • VEGF inhibitors include for example, AVASTIN® (bevacizumab), an anti-VEGF monoclonal antibody of Genentech, Inc. of South San Francisco, Calif., VEGF Trap (Regeneron/Aventis).
  • Additional VEGF inhibitors include CP-547,632 (3-(4-Bromo-2,6- difluoro-benzyloxy)-5-[3-(4-pyrrolidin l-yl-butyl)-ureido]-isothiazole-4-carboxylic acid amide hydrochloride; Pfizer Inc., NY), AG13736, AG28262 (Pfizer Inc.), SU5416, SU1 1248, & SU6668 (formerly Sugen Inc., now Pfizer, New York, N.Y.), ZD-6474 (AstraZeneca), ZD4190 which inhibits VEGF-R2 and -R1 (AstraZeneca), CEP-7055 (Cephalon Inc., Frazer, Pa.), PKC 412 (Novartis), AEE788 (Novartis), AZD-2171), NEXAVAR® (BAY 43-9006, sorafenib; Bayer Pharmaceuticals and
  • VEGFR2-selective monoclonal antibody DC101 ImClone Systems, Inc.
  • angiozyme a synthetic ribozyme from Ribozyme (Boulder, Colo.) and Chiron (Emeryville, Calif.)
  • Sirna-027 an siRNA-based VEGFRl inhibitor, Sirna Therapeutics, San Francisco, Calif.
  • Neovastat AEtema Zentaris Inc; Quebec City, Calif.
  • the compounds used in connection with the treatment methods of the present invention are administered and dosed in accordance with good medical practice, taking into account the clinical condition of the individual subject, the site and method of administration, scheduling of administration, patient age, sex, body weight and other factors known to medical practitioners.
  • the pharmaceutically“effective amount” for purposes herein is thus determined by such considerations as are known in the art. The amount must be effective to achieve improvement including, but not limited to, improved survival rate or more rapid recovery, or improvement or elimination of symptoms and other indicators as are selected as appropriate measures by those skilled in the art.
  • FIGURES are a diagrammatic representation of FIGURES.
  • FIG 1 summarizes steps of the methodology.
  • FIG. 1 Kaplan-Meier survival analysis stratified by score index for MAGEB2, MAGEB 1, PTPN14 (-), TSPAN32 gene signature. Censored patients (alive at last follow-up) are indicated on the curves.
  • RIG low: patient group with low risk index
  • RIG medium: patient group with medium risk index
  • RIG high: patient group with high risk index.
  • FIG. 1 Kaplan-Meier survival analysis stratified by score index for NAT8 (-), PPARGC1A (-), TPRG1, WAS gene signature. Censored patients (alive at last follow-up) are indicated on the curves.
  • RIG low: patient group with low risk index
  • RIG medium: patient group with medium risk index
  • RIG high: patient group with high risk index.
  • FIG. 1 Kaplan-Meier survival analysis stratified by score index for MAGEC2, MAGEC3, CCL8, CFB, COL6A3, DNAJC12, IL2RG, IL34, PL AC 8 gene signature. Censored patients (alive at last follow-up) are indicated on the curves.
  • RIG low: patient group with low risk index
  • RIG medium: patient group with medium risk index
  • RIG high: patient group with high risk index.
  • FIG. Kaplan-Meier survival analysis stratified by score index for KRT13, LRG1, SAA2, SAA1, SAMSNl, SERPINA3, SLC2A3, UCK2, WT1 gene signature. Censored patients (alive at last follow-up) are indicated on the curves.
  • RIG low: patient group with low risk index
  • RIG medium: patient group with medium risk index
  • RIG high: patient group with high risk index.
  • FIG. 7 Kaplan-Meier survival analysis stratified by score index for CRABP2, F3, MMP3, PPEF1, SLC11A1 gene signature. Censored patients (alive at last follow-up) are indicated on the curves.
  • RIG low: patient group with low risk index
  • RIG medium: patient group with medium risk index
  • RIG high: patient group with high risk index.
  • Figure 9 Validation of the "Lung” signature.
  • a and B Kaplan-Meier for overall (OS) and disease-free (DFS) survival analysis stratified in 3 groups of equivalent size. Signature “low”: patient group with low score; signature“medium”: patient group with a medium score; signature“high”: patient group with high score.
  • Figure 10 Summary table of up and downregulated genes from the first biomarker discovery step.
  • a gene will be considered differentially progressively expressed through passages if it is in the intersection of the gene sets selected in 1. and 2. steps with the constraint that the expression should be in the same direction (up or down).
  • the Leave-one-out cross validation for each patient, the risk index is defined as the linear combination of gene expression values weighted by their estimated Cox model regression coefficients fitted from all the cohort but this patient. Patients are then classified in accord to their risk index and split in 3 groups to perform a log rank test.
  • Each gene is specific to an experiment type. Indeed, if a gene is part of KTL signature, it will not be included in the 6 other experiment type signatures even if it was considered as differentially and progressively expressed in associated experiments.
  • Renal Cell Carcinoma encompasses a heterogeneous group of cancers derived from renal tubular epithelial cells and has a worldwide mortality. However, mortality rates have barely improved over the last 20 years. Novel biomarkers and biomarkers are thus urgently required for this cancer.
  • the inventors have devised a strategy to produce mouse cancer cell lines of progressively enhanced aggressiveness and specialization.
  • the mouse renal cancer cell line RENCA was serially passaged in vivo using multiple implantation strategies designed to replicate different aspects of primary tumour growth and metastasis. Transcriptomic and epigenomic data has been acquired for the derived cell lines and primary analyses have been performed. The inventors then selected plurality of genes with no reported role in RCC, and checked their relevance in patient data samples. This approach contributes to identify several gene signatures that are suitable for predicting survival time in patients suffering from RCC. Final signatures are:
  • Kidney-tail NAT8 (-), PPARGC 1 A (-), TPRG1 , WAS
  • Kidney-tail MAGEC2, MAGEC3, CCL8, CFB, COL6A3, DNAJC12, IL2RG, IL34, PL AC 8
  • the overexpression is predictive of a bad prognosis except for whose that are followed by the (-) sign.
  • Table 1 Summary table of the signatures and their predictive value in the KIRC TCGA cohort.
  • Table 1 depicts the signatures for each group (K, T, L, KTL) and their significance for OS and DFS.
  • OS Figure 9A
  • DFS Figure 9B
  • We performed multivariate Cox regression analysis of our signature (Data not shown).
  • TMM stage and Fuhrman grade) the Lung signature remained an independent prognostic factor for predicting both OS and DFS.
  • the Lung signature remains the most significant for OS and DFS when compared to the others, except for the“All Merged” signature.

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Abstract

Le carcinome à cellules rénales (RCC) englobe un groupe hétérogène de cancers dérivés de cellules épithéliales tubulaires rénales et génère une mortalité au niveau mondial. Cependant, les taux de mortalité n'ont que très peu diminué durant les 20 dernières années. De nouveaux biomarqueurs et des biomarqueurs sont ainsi urgemment requis pour ce cancer. Les inventeurs ont conçu une stratégie pour produire des lignées cellulaires cancéreuses de souris présentant une agressivité et une spécialisation progressivement améliorées. La ignée cellulaire de carcinome rénal RENCA de souris était passé en série in vivo à l'aide de multiples stratégies d'implantation conçues pour reproduire différents aspects de la croissance tumorale primaire et de la métastase. Des données transcriptomiques et épigénomiques ont été acquises pour les lignées cellulaires dérivées et des analyses primaires ont été effectuées. Les inventeurs ont ensuite sélectionné une pluralité de gènes sans rôle rapporté dans le RCC, et vérifié leur pertinence dans des échantillons de données de patients. Cette approche contribue à identifier plusieurs signatures géniques étant appropriées pour prédire le temps de survie chez des patients souffrant de RCC.
PCT/EP2020/056605 2019-03-13 2020-03-12 Nouvelles signatures géniques pour prédire le temps de survie chez des patients souffrant d'un carcinome à cellules rénales WO2020182932A1 (fr)

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Cited By (3)

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CN114075562A (zh) * 2021-03-10 2022-02-22 北京肿瘤医院(北京大学肿瘤医院) Mage-c3抑制剂及其作为制备治疗和/或预防食管鳞状细胞癌药物的用途
WO2023280790A1 (fr) 2021-07-05 2023-01-12 INSERM (Institut National de la Santé et de la Recherche Médicale) Signatures génétiques pour prédire la durée de survie chez les patients souffrant d'un carcinome des cellules rénales
CN116144783A (zh) * 2023-04-17 2023-05-23 中国人民解放军总医院第三医学中心 Wasp生物标志物在诊断、治疗肾细胞癌中的应用

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WO2023280790A1 (fr) 2021-07-05 2023-01-12 INSERM (Institut National de la Santé et de la Recherche Médicale) Signatures génétiques pour prédire la durée de survie chez les patients souffrant d'un carcinome des cellules rénales
CN116144783A (zh) * 2023-04-17 2023-05-23 中国人民解放军总医院第三医学中心 Wasp生物标志物在诊断、治疗肾细胞癌中的应用

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