PMID- 31335987 OWN - NLM STAT- MEDLINE DCOM- 20200214 LR - 20211204 IS - 1097-0215 (Electronic) IS - 0020-7136 (Linking) VI - 146 IP - 5 DP - 2020 Mar 1 TI - PTEN expression and mutations in TSC1, TSC2 and MTOR are associated with response to rapalogs in patients with renal cell carcinoma. PG - 1435-1444 LID - 10.1002/ijc.32579 [doi] AB - The mammalian target of rapamycin (mTOR) pathway inhibitors are key drugs for the treatment of many tumor types, however, there are no predictive biomarkers in clinical use. Here, we performed a molecular and immunohistochemical characterization of key mTOR pathway components in a series of 105 renal cell carcinoma patients treated with rapalogs, aimed at identifying markers of treatment response. Mutational analysis in MTOR, TSC1 and TSC2 was performed through targeted next-generation sequencing (NGS), and immunohistochemistry (IHC) was performed for PTEN, pAKT, pS6K1, pS6 and p21. Among patients with NGS data, 11 of 87 (13%) had mTOR pathway mutations (8 in MTOR, 1 in TSC1 and 2 in TSC2). When comparing the molecular data to the response of the patients, we found that partial response was more frequent in cases with mTOR pathway mutations than in those without mutations (odds ratio [OR] = 0.08, 95% confidence interval [CI] = 0.008-0.79, p = 0.030 univariate; p = 0.038 multivariable). Regarding IHC, negative PTEN staining was detected in 58% of the tumors, and it was more frequent in rapalog responder patients (OR = 0.24, 95% CI = 0.065-0.86, p = 0.029 univariate; p = 0.029 multivariable). Mutations and PTEN IHC were not mutually exclusive events and its combination improved response prediction (OR = 0.16, 95% CI = 0.04-0.62, p = 0.008 univariate; p = 0.013 multivariable). The staining of other proteins did not show and association with response and no association with PFS was observed in unselected patients. In conclusion, our findings suggest that mTOR pathway mutations, negative PTEN IHC and their combination are potential markers of rapalog response. CI - (c) 2019 UICC. FAU - Roldan-Romero, Juan M AU - Roldan-Romero JM AUID- ORCID: 0000-0002-5651-4313 AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. FAU - Beuselinck, Benoit AU - Beuselinck B AD - Laboratory of Experimental Oncology, Department of Oncology, University of Leuven, Leuven, Belgium. FAU - Santos, Maria AU - Santos M AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. FAU - Rodriguez-Moreno, Juan F AU - Rodriguez-Moreno JF AD - Genitourinary and Gynecological Cancer Unit, HM Hospitales - Centro Integral Oncologico HM Clara Campal, Madrid, Spain. FAU - Lanillos, Javier AU - Lanillos J AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. FAU - Calsina, Bruna AU - Calsina B AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. FAU - Gutierrez, Ana AU - Gutierrez A AD - Hospital HM Puerta del Sur, Mostoles, Spain. FAU - Tang, Karin AU - Tang K AD - Hospital Universitario de Mostoles, Mostoles, Spain. FAU - Lainez, Nuria AU - Lainez N AD - Complejo Hospitalario de Navarra, Pamplona, Spain. FAU - Puente, Javier AU - Puente J AD - Medical Oncology Department, Hospital Clinico San Carlos, Instituto de Investigacion Sanitaria del Hospital Clinico San Carlos (IdISSC), CIBERONC, Madrid, Spain. FAU - Castellano, Daniel AU - Castellano D AD - Hospital Universitario Doce de Octubre, Madrid, Spain. FAU - Esteban, Emilio AU - Esteban E AD - Hospital Central de Asturias, Oviedo, Spain. FAU - Climent, Miguel A AU - Climent MA AD - Fundacion Instituto Valenciano de Oncologia, Valencia, Spain. FAU - Arranz, Jose A AU - Arranz JA AD - Hospital General Universitario Gregorio Maranon, Madrid, Spain. FAU - Albersen, Maarten AU - Albersen M AD - Department of Urology, University Hospitals Leuven, Leuven, Belgium. FAU - Oudard, Stephane AU - Oudard S AD - Department of Medical Oncology, Hopital Europeen Georges-Pompidou, Paris, France. FAU - Couchy, Gabrielle AU - Couchy G AD - Inserm UMR 1162, Universite Paris-Descartes, Paris, France. FAU - Caleiras, Eduardo AU - Caleiras E AD - Histopathology Core Unit, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. FAU - Montero-Conde, Cristina AU - Montero-Conde C AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. FAU - Cascon, Alberto AU - Cascon A AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. AD - Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Madrid, Spain. FAU - Robledo, Mercedes AU - Robledo M AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. AD - Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Madrid, Spain. FAU - Rodriguez-Antona, Cristina AU - Rodriguez-Antona C AUID- ORCID: 0000-0001-8750-7338 AD - Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. AD - Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Madrid, Spain. FAU - Garcia-Donas, Jesus AU - Garcia-Donas J AD - Genitourinary and Gynecological Cancer Unit, HM Hospitales - Centro Integral Oncologico HM Clara Campal, Madrid, Spain. CN - Spanish Oncology Genitourinary Group (SOGUG) LA - eng PT - Journal Article PT - Observational Study PT - Research Support, Non-U.S. Gov't DEP - 20190809 PL - United States TA - Int J Cancer JT - International journal of cancer JID - 0042124 RN - 0 (Antineoplastic Agents) RN - 0 (Biomarkers, Tumor) RN - 0 (TSC1 protein, human) RN - 0 (TSC2 protein, human) RN - 0 (Tuberous Sclerosis Complex 1 Protein) RN - 0 (Tuberous Sclerosis Complex 2 Protein) RN - 624KN6GM2T (temsirolimus) RN - 9HW64Q8G6G (Everolimus) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 3.1.3.67 (PTEN Phosphohydrolase) RN - EC 3.1.3.67 (PTEN protein, human) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Agents/*pharmacology/therapeutic use MH - Biomarkers, Tumor/antagonists & inhibitors/*genetics/metabolism MH - Carcinoma, Renal Cell/*drug therapy/genetics/mortality MH - DNA Mutational Analysis MH - Drug Resistance, Neoplasm/*genetics MH - Everolimus/pharmacology/therapeutic use MH - Female MH - Follow-Up Studies MH - Humans MH - Kidney/pathology MH - Kidney Neoplasms/*drug therapy/genetics/mortality MH - Male MH - Middle Aged MH - Mutation MH - PTEN Phosphohydrolase/metabolism MH - Prognosis MH - Progression-Free Survival MH - Prospective Studies MH - Signal Transduction/drug effects/genetics MH - Sirolimus/analogs & derivatives/pharmacology/therapeutic use MH - TOR Serine-Threonine Kinases/antagonists & inhibitors/genetics/metabolism MH - Tuberous Sclerosis Complex 1 Protein/genetics MH - Tuberous Sclerosis Complex 2 Protein/genetics EDAT- 2019/07/25 06:00 MHDA- 2020/02/15 06:00 CRDT- 2019/07/24 06:00 PHST- 2019/01/25 00:00 [received] PHST- 2019/05/31 00:00 [revised] PHST- 2019/06/14 00:00 [accepted] PHST- 2019/07/25 06:00 [pubmed] PHST- 2020/02/15 06:00 [medline] PHST- 2019/07/24 06:00 [entrez] AID - 10.1002/ijc.32579 [doi] PST - ppublish SO - Int J Cancer. 2020 Mar 1;146(5):1435-1444. doi: 10.1002/ijc.32579. Epub 2019 Aug 9.