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Featured researches published by Sandy Srinivas.


The Lancet | 2016

Atezolizumab in patients with locally advanced and metastatic urothelial carcinoma who have progressed following treatment with platinum-based chemotherapy: a single-arm, multicentre, phase 2 trial

Jonathan E. Rosenberg; Jean H. Hoffman-Censits; Thomas Powles; Michiel S. van der Heijden; Arjun Vasant Balar; Andrea Necchi; Nancy A. Dawson; Peter H. O'Donnell; Ani Balmanoukian; Yohann Loriot; Sandy Srinivas; M. Retz; Petros Grivas; Richard W. Joseph; Matthew D. Galsky; Mark T. Fleming; Daniel P. Petrylak; Jose Luis Perez-Gracia; Howard A. Burris; Daniel Castellano; Christina Canil; Joaquim Bellmunt; Dean F. Bajorin; Dorothee Nickles; Richard Bourgon; Garrett Michael Frampton; Na Cui; Sanjeev Mariathasan; Oyewale O. Abidoye; Gregg Fine

BACKGROUND Patients with metastatic urothelial carcinoma have few treatment options after failure of platinum-based chemotherapy. In this trial, we assessed treatment with atezolizumab, an engineered humanised immunoglobulin G1 monoclonal antibody that binds selectively to programmed death ligand 1 (PD-L1), in this patient population. METHODS For this multicentre, single-arm, two-cohort, phase 2 trial, patients (aged ≥18 years) with inoperable locally advanced or metastatic urothelial carcinoma whose disease had progressed after previous platinum-based chemotherapy were enrolled from 70 major academic medical centres and community oncology practices in Europe and North America. Key inclusion criteria for enrolment were Eastern Cooperative Oncology Group performance status of 0 or 1, measurable disease defined by Response Evaluation Criteria In Solid Tumors version 1.1 (RECIST v1.1), adequate haematological and end-organ function, and no autoimmune disease or active infections. Formalin-fixed paraffin-embedded tumour specimens with sufficient viable tumour content were needed from all patients before enrolment. Patients received treatment with intravenous atezolizumab (1200 mg, given every 3 weeks). PD-L1 expression on tumour-infiltrating immune cells (ICs) was assessed prospectively by immunohistochemistry. The co-primary endpoints were the independent review facility-assessed objective response rate according to RECIST v1.1 and the investigator-assessed objective response rate according to immune-modified RECIST, analysed by intention to treat. A hierarchical testing procedure was used to assess whether the objective response rate was significantly higher than the historical control rate of 10% at an α level of 0·05. This study is registered with ClinicalTrials.gov, number NCT02108652. FINDINGS Between May 13, 2014, and Nov 19, 2014, 486 patients were screened and 315 patients were enrolled into the study. Of these patients, 310 received atezolizumab treatment (five enrolled patients later did not meet eligibility criteria and were not dosed with study drug). The PD-L1 expression status on infiltrating immune cells (ICs) in the tumour microenvironment was defined by the percentage of PD-L1-positive immune cells: IC0 (<1%), IC1 (≥1% but <5%), and IC2/3 (≥5%). The primary analysis (data cutoff May 5, 2015) showed that compared with a historical control overall response rate of 10%, treatment with atezolizumab resulted in a significantly improved RECIST v1.1 objective response rate for each prespecified immune cell group (IC2/3: 27% [95% CI 19-37], p<0·0001; IC1/2/3: 18% [13-24], p=0·0004) and in all patients (15% [11-20], p=0·0058). With longer follow-up (data cutoff Sept 14, 2015), by independent review, objective response rates were 26% (95% CI 18-36) in the IC2/3 group, 18% (13-24) in the IC1/2/3 group, and 15% (11-19) overall in all 310 patients. With a median follow-up of 11·7 months (95% CI 11·4-12·2), ongoing responses were recorded in 38 (84%) of 45 responders. Exploratory analyses showed The Cancer Genome Atlas (TCGA) subtypes and mutation load to be independently predictive for response to atezolizumab. Grade 3-4 treatment-related adverse events, of which fatigue was the most common (five patients [2%]), occurred in 50 (16%) of 310 treated patients. Grade 3-4 immune-mediated adverse events occurred in 15 (5%) of 310 treated patients, with pneumonitis, increased aspartate aminotransferase, increased alanine aminotransferase, rash, and dyspnoea being the most common. No treatment-related deaths occurred during the study. INTERPRETATION Atezolizumab showed durable activity and good tolerability in this patient population. Increased levels of PD-L1 expression on immune cells were associated with increased response. This report is the first to show the association of TCGA subtypes with response to immune checkpoint inhibition and to show the importance of mutation load as a biomarker of response to this class of agents in advanced urothelial carcinoma. FUNDING F Hoffmann-La Roche Ltd.


Journal of Clinical Oncology | 2013

Cabozantinib in Patients With Advanced Prostate Cancer: Results of a Phase II Randomized Discontinuation Trial

David C. Smith; Matthew R. Smith; Christopher Sweeney; Aymen Elfiky; Christopher J. Logothetis; Paul G. Corn; Nicholas J. Vogelzang; Eric J. Small; Andrea L. Harzstark; Michael S. Gordon; Ulka N. Vaishampayan; Naomi B. Haas; Alexander I. Spira; Primo N. Lara; Chia Chi Lin; Sandy Srinivas; Avishay Sella; Patrick Schöffski; Christian Scheffold; Aaron Weitzman; Maha Hussain

PURPOSE Cabozantinib (XL184) is an orally bioavailable tyrosine kinase inhibitor with activity against MET and vascular endothelial growth factor receptor 2. We evaluated the activity of cabozantinib in patients with castration-resistant prostate cancer (CRPC) in a phase II randomized discontinuation trial with an expansion cohort. PATIENTS AND METHODS Patients received 100 mg of cabozantinib daily. Those with stable disease per RECIST at 12 weeks were randomly assigned to cabozantinib or placebo. Primary end points were objective response rate at 12 weeks and progression-free survival (PFS) after random assignment. RESULTS One hundred seventy-one men with CRPC were enrolled. Random assignment was halted early based on the observed activity of cabozantinib. Seventy-two percent of patients had regression in soft tissue lesions, whereas 68% of evaluable patients had improvement on bone scan, including complete resolution in 12%. The objective response rate at 12 weeks was 5%, with stable disease in 75% of patients. Thirty-one patients with stable disease at week 12 were randomly assigned. Median PFS was 23.9 weeks (95% CI, 10.7 to 62.4 weeks) with cabozantinib and 5.9 weeks (95% CI, 5.4 to 6.6 weeks) with placebo (hazard ratio, 0.12; P < .001). Serum total alkaline phosphatase and plasma cross-linked C-terminal telopeptide of type I collagen were reduced by ≥ 50% in 57% of evaluable patients. On retrospective review, bone pain improved in 67% of evaluable patients, with a decrease in narcotic use in 56%. The most common grade 3 adverse events were fatigue (16%), hypertension (12%), and hand-foot syndrome (8%). CONCLUSION Cabozantinib has clinical activity in men with CRPC, including reduction of soft tissue lesions, improvement in PFS, resolution of bone scans, and reductions in bone turnover markers, pain, and narcotic use.


Journal of Clinical Oncology | 2007

Randomized Phase II Study of Erlotinib Combined With Bevacizumab Compared With Bevacizumab Alone in Metastatic Renal Cell Cancer

Ronald M. Bukowski; Fairooz F. Kabbinavar; Robert A. Figlin; Keith T. Flaherty; Sandy Srinivas; Ulka Vaishampayan; Harry A. Drabkin; Janice J. Dutcher; Sarah Ryba; Qi Xia; Frank A. Scappaticci; David F. McDermott

PURPOSE Bevacizumab (Bev) has clinical activity in advanced renal cell carcinoma (RCC), and, when combined with erlotinib (Erl), has shown encouraging objective response rate (ORR) and progression-free survival (PFS). We performed a phase II, randomized, double-blind, multicenter, placebo-controlled trial to assess whether Erl provides additional clinical benefit with regard to PFS and ORR when combined with Bev in first-line treatment of metastatic RCC. PATIENTS AND METHODS One hundred four patients received intravenous Bev (10 mg/kg) every 2 weeks in combination with oral Erl (150 mg) or placebo daily. Patients were treated until progression or toxicity. RESULTS A landmark analysis was performed 9 months after enrollment was completed (median follow-up, 9.8 months). Sixty-five patients had discontinued therapy; time to study discontinuation did not differ between the two treatment groups. The median PFS was 9.9 months (Bev + Erl [B+E]) versus 8.5 months (Bev; hazard ratio = 0.86; 95% CI, 0.5 to 1.49; P = .58). ORR (complete plus partial) was 14% (B+E) versus 13% (Bev). One complete response occurred in the B+E group. Median survival was 20 months for B+E but not reached for Bev. The most common grade 3/4 adverse events (> 5% of patients) were hypertension, rash, proteinuria, diarrhea, and hemorrhage. One treatment-related death occurred on study (GI perforation, B+E group). CONCLUSION The addition of Erl to Bev was well tolerated, but did not provide additional clinical benefit compared with Bev alone. Bev has encouraging clinical activity for previously untreated metastatic RCC patients.


Journal of Clinical Oncology | 2013

Phase II and Biomarker Study of the Dual MET/VEGFR2 Inhibitor Foretinib in Patients With Papillary Renal Cell Carcinoma

Toni K. Choueiri; Ulka N. Vaishampayan; Jonathan E. Rosenberg; Theodore F. Logan; Andrea L. Harzstark; Ronald M. Bukowski; Brian I. Rini; Sandy Srinivas; Mark N. Stein; Laurel M. Adams; Lone H. Ottesen; Kevin Laubscher; Laurie Sherman; David F. McDermott; Naomi B. Haas; Keith T. Flaherty; Robert Ross; Peter D. Eisenberg; Paul S. Meltzer; Maria J. Merino; Donald P. Bottaro; W. Marston Linehan; Ramaprasad Srinivasan

PURPOSE Foretinib is an oral multikinase inhibitor targeting MET, VEGF, RON, AXL, and TIE-2 receptors. Activating mutations or amplifications in MET have been described in patients with papillary renal cell carcinoma (PRCC). We aimed to evaluate the efficacy and safety of foretinib in patients with PRCC. PATIENTS AND METHODS Patients were enrolled onto the study in two cohorts with different dosing schedules of foretinib: cohort A, 240 mg once per day on days 1 through 5 every 14 days (intermittent arm); cohort B, 80 mg daily (daily dosing arm). Patients were stratified on the basis of MET pathway activation (germline or somatic MET mutation, MET [7q31] amplification, or gain of chromosome 7). The primary end point was overall response rate (ORR). RESULTS Overall, 74 patients were enrolled, with 37 in each dosing cohort. ORR by Response Evaluation Criteria in Solid Tumors (RECIST) 1.0 was 13.5%, median progression-free survival was 9.3 months, and median overall survival was not reached. The presence of a germline MET mutation was highly predictive of a response (five of 10 v five of 57 patients with and without germline MET mutations, respectively). The most frequent adverse events of any grade associated with foretinib were fatigue, hypertension, gastrointestinal toxicities, and nonfatal pulmonary emboli. CONCLUSION Foretinib demonstrated activity in patients with advanced PRCC with a manageable toxicity profile and a high response rate in patients with germline MET mutations.


European Urology | 2014

Cytoreductive Nephrectomy in Patients with Synchronous Metastases from Renal Cell Carcinoma: Results from the International Metastatic Renal Cell Carcinoma Database Consortium

Daniel Y.C. Heng; J. Connor Wells; Brian I. Rini; Benoit Beuselinck; Jae Lyun Lee; Jennifer J. Knox; Georg A. Bjarnason; Sumanta K. Pal; Christian Kollmannsberger; Takeshi Yuasa; Sandy Srinivas; Frede Donskov; Aristotelis Bamias; Lori Wood; D. Scott Ernst; Neeraj Agarwal; Ulka N. Vaishampayan; Sun Young Rha; Jenny J. Kim; Toni K. Choueiri

BACKGROUND The benefit of cytoreductive nephrectomy (CN) for overall survival (OS) is unclear in patients with synchronous metastatic renal cell carcinoma (mRCC) in the era of targeted therapy. OBJECTIVE To determine OS benefit of CN compared with no CN in mRCC patients treated with targeted therapies. DESIGN, SETTING, AND PARTICIPANTS Retrospective data from patients with synchronous mRCC (n=1658) from the International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) were used to compare 982 mRCC patients who had a CN with 676 mRCC patients who did not. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS OS was compared and hazard ratios (HRs) adjusted for IMDC poor prognostic criteria. RESULTS AND LIMITATIONS Patients who had CN had better IMDC prognostic profiles versus those without (favorable, intermediate, or poor in 9%, 63%, and 28% vs 1%, 45%, and 54%, respectively). The median OS of patients with CN versus without CN was 20.6 versus 9.5 mo (p<0.0001). When adjusted for IMDC criteria to correct for imbalances, the HR of death was 0.60 (95% confidence interval, 0.52-0.69; p<0.0001). Patients estimated to survive <12 mo may receive marginal benefit from CN. Patients who have four or more of the IMDC prognostic criteria did not benefit from CN. Data were collected retrospectively. CONCLUSIONS CN is beneficial in synchronous mRCC patients treated with targeted therapy, even after adjusting for prognostic factors. Patients with estimated survival times <12 mo or four or more IMDC prognostic factors may not benefit from CN. This information may aid in patient selection as we await results from randomized controlled trials. PATIENT SUMMARY We looked at the survival outcomes of metastatic renal cell carcinoma patients who did or did not have the primary tumor removed. We found that most patients benefited from tumor removal, except for those with four or more IMDC risk factors.


Urology | 2001

Progressive decrease in bone density over 10 years of androgen deprivation therapy in patients with prostate cancer

B.Jenny Kiratli; Sandy Srinivas; Inder Perkash; Martha K. Terris

OBJECTIVES Several reports suggest an increased incidence of osteoporosis and concomitant fractures in men receiving androgen deprivation therapy (ADT) for prostate cancer. We sought to estimate the longitudinal effects of ADT on loss of bone density in this cross-sectional study. METHODS Hip and spine bone mineral density (BMD) studies were performed by dual-energy x-ray absorptiometry on 36 patients with prostate cancer. The year 0 cohort (n = 8) consisted of patients who had not yet begun planned ADT. These men were compared to patients receiving ADT who underwent BMD evaluation at year 2 (n = 6), year 4 (n = 7), year 6 (n = 5), year 8 (n = 5), and year 10 (n = 5) of therapy. All BMD values for the patients with prostate cancer were compared to age-matched control subjects. RESULTS Hip BMD was significantly lower in patients on ADT (mean BMD 0.802 g/cm(2)) compared with those not on ADT (mean BMD 0.935 g/cm(2)). Patients at year 0 had hip and spine BMD similar to age-matched control subjects. There was a significant trend for decreased hip BMD with increasing years of ADT (r = 0.46, P = 0.00008). This relationship was more dramatic when hip BMD at each time point was compared to age-matched control subjects (r = 0.55, P = 0.5 x 10(-16)). This bone loss was evident even up to year 10. BMD loss was more dramatic in patients who had undergone surgical castration than those receiving medical ADT (P = 0.08). Patients on intermittent ADT had similar BMD loss as patients on continuous ADT at year 2 and year 4 but demonstrated less bone loss at year 6 (P = 0.07) despite equivalently low testosterone levels. CONCLUSIONS There is diminished BMD with increasing duration of ADT. Continuous ADT and surgical castration may be more deleterious than medical therapy, particularly when the medical therapy is given in an intermittent fashion.


Lancet Oncology | 2015

The International Metastatic Renal Cell Carcinoma Database Consortium model as a prognostic tool in patients with metastatic renal cell carcinoma previously treated with first-line targeted therapy: a population-based study

Jenny J. Ko; Wanling Xie; Nils Kroeger; Jae Lyun Lee; Brian I. Rini; Jennifer J. Knox; Georg A. Bjarnason; Sandy Srinivas; Sumanta K. Pal; Takeshi Yuasa; Martin Smoragiewicz; Frede Donskov; Ravindran Kanesvaran; Lori Wood; D. Scott Ernst; Neeraj Agarwal; Ulka N. Vaishampayan; Sun Young Rha; Toni K. Choueiri; Daniel Y.C. Heng

BACKGROUND Previous prognostic models for second-line systemic therapy in patients with metastatic renal cell carcinoma have not been studied in the setting of targeted therapy. We sought to validate the International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) model in patients with metastatic renal cell carcinoma receiving next-line targeted therapy after progression on first-line targeted therapy. METHODS In this population-based study, we analysed patients who received second-line targeted therapy for metastatic renal cell carcinoma at 19 centres in Canada, USA, Greece, Japan, Singapore, South Korea, and Denmark. The primary endpoint was overall survival since the initiation of second-line therapy. We compared the prognostic performance of the IMDC model with the three-factor MSKCC model used for previously treated patients for overall survival since the start of second-line targeted therapy. FINDINGS Between Jan 1, 2005, and Nov 30, 2012, we included 1021 patients treated with second-line targeted therapy. Median overall survival since the start of second-line targeted therapy was 12·5 months (95% CI 11·3-14·3). Five of six predefined factors in the IMDC model (anaemia, thrombocytosis, neutrophilia, Karnofsky performance status [KPS] <80, and <1 year from diagnosis to first-line targeted therapy) were independent predictors of poor overall survival on multivariable analysis. The concordance index using all six prognostic factors (ie, also including hypercalcaemia) was 0·70 (95% CI 0·67-0·72) with the IMDC model and was 0·66 (95% CI 0·64-0·68) with the three-factor MSKCC model. When patients were divided into three risk categories using IMDC criteria, median overall survival was 35·3 months (95% CI 28·3-47·8) in the favourable risk group (n=76), 16·6 months (14·9-17·9) in the intermediate risk group (n=529), and 5·4 months (4·7-6·8) in the poor risk group (n=261). INTERPRETATION The IMDC prognostic model can be applied to patients previously treated with targeted therapy, in addition to previously validated populations in first-line targeted therapy. The IMDC prognostic model in the second-line targeted therapy setting has an improved prognostic performance and is applicable to a more contemporary patient cohort than that of the three-factor MSKCC model. FUNDING DF/HCC Kidney Cancer SPORE P50 CA101942-01, Kidney Cancer Research Network of Canada, Canadian Institute for Health Research, Trust Family, Loker Pinard, Michael Brigham, and Gerald DeWulf.


Jacc-Heart Failure | 2013

The Frequency and Severity of Cardiovascular Toxicity From Targeted Therapy in Advanced Renal Cell Carcinoma Patients

Philip S. Hall; Lauren C. Harshman; Sandy Srinivas; Ronald M. Witteles

OBJECTIVES The purpose of this study was to document the incidence and extent of cardiovascular toxicity among advanced renal cell carcinoma patients treated with newer targeted cancer agents. BACKGROUND The potential for targeted cancer agents to induce cardiovascular toxicity has been increasingly recognized, but the overall incidence and extent of toxicity have not been well characterized. Early detection of asymptomatic patients could preempt symptomatic toxicity and reduce treatment-related morbidity and mortality. METHODS The incidence of hypertension, left ventricular dysfunction, and heart failure was assessed for all advanced renal cell carcinoma patients treated with targeted therapies at our institution between 2004 and 2011. Grading was performed according to the Common Terminology Criteria for Adverse Events version 4.0. RESULTS Cardiovascular toxicity developed in 116 of 159 patients (73%), including 52 of 159 patients (33%) when hypertension was excluded. Toxicity varied from occurrences of asymptomatic drops in left ventricular ejection fraction to rises in N-terminal-pro-B-type natriuretic peptide to severe heart failure. The tyrosine kinase inhibitor sunitinib was the agent most frequently used, with 66 of 101 sunitinib-treated patients (65%) developing a form of cardiovascular toxicity, including 32 of 101 patients (32%), excluding hypertension. Other VEGF inhibitors such as bevacizumab, sorafenib, and pazopanib also elicited significant cardiovascular toxicity with incidences ranging from 51% to 68%. CONCLUSIONS The frequency and severity of cardiovascular toxicity in advanced renal cell carcinoma patients treated with targeted cancer therapies are high.


Cancer | 2009

Vinflunine in platinum-pretreated patients with locally advanced or metastatic urothelial carcinoma: results of a large phase 2 study.

David J. Vaughn; Sandy Srinivas; Walter M. Stadler; Roberto Pili; Daniel P. Petrylak; Cora N. Sternberg; David C. Smith; Sarah Ringuette; Edwin de Wit; Virginie Pautret; Claude George

The activity and safety of vinflunine was evaluated in patients with locally advanced or metastatic urothelial carcinoma (UC) who developed disease progression within 12 months of platinum‐containing chemotherapy.


JAMA Oncology | 2017

Efficacy and Safety of Durvalumab in Locally Advanced or Metastatic Urothelial Carcinoma: Updated Results From a Phase 1/2 Open-label Study

Thomas Powles; Peter H. O'Donnell; Christophe Massard; Hendrik Tobias Arkenau; Terence W. Friedlander; Christopher J. Hoimes; Jae Lyun Lee; Michael Ong; Srikala S. Sridhar; Nicholas J. Vogelzang; Mayer Fishman; Jingsong Zhang; Sandy Srinivas; Jigar Parikh; Joyce Antal; Xiaoping Jin; Ashok Kumar Gupta; Yong Ben; Noah M. Hahn

Importance The data reported herein were accepted for assessment by the US Food and Drug Administration for Biologics License Application under priority review to establish the clinical benefit of durvalumab as second-line therapy for locally advanced or metastatic urothelial carcinoma (UC), resulting in its recent US approval. Objective To report a planned update of the safety and efficacy of durvalumab in patients with locally advanced/metastatic UC. Design, Setting, and Participants This is an ongoing phase 1/2 open-label study of 191 adult patients with histologically or cytologically confirmed locally advanced/metastatic UC whose disease had progressed on, were ineligible for, or refused prior chemotherapy from 60 sites in 9 countries as reported herein. Intervention Patients were administered durvalumab intravenous infusion, 10 mg/kg every 2 weeks, for up to 12 months or until progression, starting another anticancer therapy, or unacceptable toxic effects. Main Outcomes and Measures Primary end points were safety and confirmed objective response rate (ORR) per blinded independent central review (Response Evaluation Criteria In Solid Tumors [RECIST], version 1.1). Results A total of 191 patients with UC had received treatment. As of October 24, 2016 (90-day update), the median follow-up was 5.78 months (range, 0.4-25.9 months). The median age of patients was 67.0 years and most were male (136 [71.2%]) and white (123 [71.1%]). All patients had stage 4 disease, and 190 (99.5%) had prior anticancer therapy (182 [95.3%] postplatinum). The ORR was 17.8% (34 of 191; 95% CI, 12.7%-24.0%), including 7 complete responses. Responses were early (median time to response, 1.41 months), durable (median duration of response not reached), and observed regardless of programmed cell death ligand-1 (PD-L1) expression (ORR, 27.6% [n = 27; 95% CI, 19.0%-37.5%] and 5.1% [n = 4; 95% CI, 1.4%-12.5%] in patients with high and low or negative expression of PD-L1, respectively). Median progression-free survival and overall survival were 1.5 months (95% CI, 1.4-1.9 months) and 18.2 months (95% CI, 8.1 months to not estimable), respectively; the 1-year overall survival rate was 55% (95% CI, 44%-65%), as estimated by Kaplan-Meier method. Grade 3/4 treatment-related adverse events (AEs) occurred in 13 patients (6.8%); grade 3/4 immune-mediated AEs occurred in 4 patients (2.1%); and treatment-related AEs led to discontinuation of 3 patients (1.6%), 2 of whom had immune-mediated AEs that led to death (autoimmune hepatitis and pneumonitis). Conclusions and Relevance Durvalumab, 10 mg/kg every 2 weeks, demonstrates favorable clinical activity and an encouraging and manageable safety profile in patients with locally advanced/metastatic UC. Trial Registration clinicaltrials.gov Identifier: NCT01693562

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Neeraj Agarwal

Huntsman Cancer Institute

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Sumanta K. Pal

City of Hope National Medical Center

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Jennifer J. Knox

Princess Margaret Cancer Centre

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