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Park JH, Devlin S, Durham BH, Winer ES, Huntington S, von Keudell G, Vemuri S, Shukla M, Falco V, Cuello B, Gore S, Stone R, Abdel-Wahab O, Tallman MS. Vemurafenib and Obinutuzumab as Frontline Therapy for Hairy Cell Leukemia. NEJM Evid 2023; 2:EVIDoa2300074. [PMID: 38320179 DOI: 10.1056/evidoa2300074] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Vemurafenib and Obinutuzumab for Hairy Cell LeukemiaIn this study of vemurafenib plus obinutuzumab of patients with previously untreated hairy cell leukemia, treatment was administered for four cycles, and the primary end point was complete remission rate. Twenty-seven of 30 patients completed all four cycles of treatment and achieved complete remission. No dose-limiting toxicity was observed.
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Affiliation(s)
- Jae H Park
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
- Department of Medicine, Weill Cornell Medicine, New York
| | - Sean Devlin
- Department of Epidemiology & Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Benjamin H Durham
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Eric S Winer
- Leukemia Service, Department of Medicine, Dana-Farber Cancer Institute, Boston
| | | | | | - Shreya Vemuri
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Madhulika Shukla
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Victoria Falco
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Bernadette Cuello
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Steven Gore
- Yale Cancer Center, New Haven, CT
- National Cancer Institute, Bethesda, MD
| | - Richard Stone
- Leukemia Service, Department of Medicine, Dana-Farber Cancer Institute, Boston
| | - Omar Abdel-Wahab
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
- Molecular Pharmacology Program, Sloan Kettering Institute, New York
| | - Martin S Tallman
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
- Department of Medicine, Northwestern Comprehensive Cancer Center, Chicago
- Northwestern University Feinberg School of Medicine, Robert H. Lurie Comprehensive Cancer Center, Chicago
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2
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Faraj W, Robson M, Tawil A, Reuter V, Mahfouz R, Cambria R, Saheb N, Ferrer CS, Vemuri S, Yaghi M, Kanso M, Abdullah A, El Nounou G, Jabbour M, Muenkel K, Kaufman K, Wakim JM, Badson S, Wilson R, Houston C, Drobnjak M, Hoballah J, Ziyadeh FN, Zaatari G, Brennan M, O'Reilly EM, Abu-Alfa AK, Abou-Alfa GK. Biospecimen Repositories in Low- and Middle-Income Countries: Insights From an American University of Beirut and Memorial Sloan Kettering Collaboration. JCO Glob Oncol 2023; 9:e2300140. [PMID: 37883726 PMCID: PMC10846789 DOI: 10.1200/go.23.00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 07/08/2023] [Accepted: 08/14/2023] [Indexed: 10/28/2023] Open
Abstract
PURPOSE Biobanking helps source tissue and blood for studying cancer genomics. Access to biorepository resources in low- and middle-income countries is lacking. Memorial Sloan Kettering Cancer Center (MSK) and the American University of Beirut (AUB) established a joint tissue biorepository at AUB in Beirut, Lebanon. The undertaking encountered key challenges that were unanticipated. MATERIALS AND METHODS Patients age 18 years or older were eligible for enrollment at AUB. After consent, biospecimens were obtained at the time of routine diagnostic and/or therapeutic interventions. Both normal and abnormal tissue and solid and/or liquid specimens were collected from varied body sites. Early on, declining consent was frequently observed, and this was highlighted for investigation to understand potential participants reasoning. RESULTS Of 850 patients approached, 704 (70.8%) elected to consent and 293 (29.5%) declined participation. The number of declined consents led to an amendment permitting the documentation of reasons for same. Of 100 potential participants who declined to consent and to whom outreach was undertaken, 63% indicated lack of research awareness and 27% deferral to their primary physician or family member. A financial gain for AUB was cited as concern by 5%, cultural boundaries in 4%, and 1% expressed concern about confidentiality. Of the patients who elected to consent, 682 biospecimens were procured. CONCLUSION The AUB-MSK biospecimen repository has provided a unique resource for interrogation. Patient participation rate was high, and analyses of those who elected not to consent (29%) provide important insights into educational need and the local and cultural awareness and norms.
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Affiliation(s)
- Walid Faraj
- American University of Beirut, Beirut, Lebanon
| | - Mark Robson
- Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
| | - Ayman Tawil
- American University of Beirut, Beirut, Lebanon
| | - Victor Reuter
- Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
| | | | - Roy Cambria
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Nour Saheb
- American University of Beirut, Beirut, Lebanon
| | | | - Shreya Vemuri
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | | | | | - Mark Jabbour
- American University of Beirut, Beirut, Lebanon
- Deceased
| | - Kerri Muenkel
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | - Sandy Badson
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Roger Wilson
- Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
- Deceased
| | | | | | | | | | | | - Murray Brennan
- Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
| | - Eileen M. O'Reilly
- Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
| | | | - Ghassan K. Abou-Alfa
- Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
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Handa S, Lee JO, Derkach A, Stone RM, Saven A, Altman JK, Grever MR, Rai KR, Shukla M, Vemuri S, Montoya S, Taylor J, Abdel-Wahab O, Tallman MS, Park JH. Long-term outcomes in patients with relapsed or refractory hairy cell leukemia treated with vemurafenib monotherapy. Blood 2022; 140:2663-2671. [PMID: 35930750 PMCID: PMC9935554 DOI: 10.1182/blood.2022016183] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 07/15/2022] [Accepted: 07/22/2022] [Indexed: 12/30/2022] Open
Abstract
Vemurafenib, an oral BRAF inhibitor, has demonstrated high response rates in relapsed/refractory (R/R) hairy cell leukemia (HCL). However, little is known about long-term outcomes and response to retreatment. Herein, we report the results of 36 patients with R/R HCL treated with vemurafenib from the United States arm of the phase 2 clinical trial (NCT01711632). The best overall response rate was 86%, including 33% complete response (CR) and 53% partial response (PR). After a median follow-up of 40 months, 21 of 31 responders (68%) experienced relapse with a median relapse-free survival (RFS) of 19 months (range, 12.5-53.9 months). There was no significant difference in the RFS for patients with CR vs PR. Fourteen of 21 (67%) relapsed patients were retreated with vemurafenib, with 86% achieving complete hematologic response. Two patients acquired resistance to vemurafenib with the emergence of new KRAS and CDKN2A mutations, respectively. Six of 12 (50%) responders to vemurafenib retreatment experienced another relapse with a median RFS of 12.7 months. Overall survival (OS) was 82% at 4 years, with a significantly shorter OS in patients who relapsed within 1 year of initial treatment with vemurafenib. Higher cumulative doses or a longer duration of treatment did not lengthen the durability of response. All adverse events in the retreatment cohort were grade 1/2 except for 1 case of a grade 3 rash and 1 grade 3 fever/pneumonia. Our data suggest that vemurafenib retreatment is a safe and effective option for patients with R/R HCL.
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Affiliation(s)
- Shivani Handa
- Division of Hematology-Oncology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jeong-Ok Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Andriy Derkach
- Department of Biostatistics and Epidemiology, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Richard M. Stone
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Alan Saven
- Division of Hematology and Oncology, Scripps Clinic, La Jolla, CA
| | - Jessica K. Altman
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL
| | | | - Kanti R. Rai
- Cancer Institute at Zucker School of Medicine Hofstra-Northwell, New Hyde Park, NY
| | | | - Shreya Vemuri
- Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Skye Montoya
- Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL
| | - Justin Taylor
- Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL
| | - Omar Abdel-Wahab
- Department of Medicine, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
- Leukemia Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Martin S. Tallman
- Department of Medicine, Weill Cornell Medical College, New York, NY
- Leukemia Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Jae H. Park
- Department of Medicine, Weill Cornell Medical College, New York, NY
- Leukemia Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY
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Geyer MB, Ritchie EK, Rao AV, Vemuri S, Flynn J, Hsu M, Devlin SM, Roshal M, Gao Q, Shukla M, Salcedo JM, Maslak P, Tallman MS, Douer D, Park JH. Pediatric-inspired chemotherapy incorporating pegaspargase is safe and results in high rates of minimal residual disease negativity in adults up to age 60 with Philadelphia chromosome-negative acute lymphoblastic leukemia. Haematologica 2021; 106:2086-2094. [PMID: 33054114 PMCID: PMC8327717 DOI: 10.3324/haematol.2020.251686] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Indexed: 11/23/2022] Open
Abstract
Administration of pediatric-inspired chemotherapy to adults up to age 60 with acute lymphoblastic leukemia (ALL) is challenging in part due to toxicities of asparaginase as well as myelosuppression. We conducted a multi-center phase II clinical trial (clinicaltrials gov. Identifier: NCT01920737) investigating a pediatric-inspired regimen, based on the augmented arm of the Children’s Cancer Group 1882 protocol, incorporating six doses of pegaspargase 2,000 IU/m2, rationally synchronized to avoid overlapping toxicity with other agents. We treated 39 adults aged 20-60 years (median age 38 years) with newly-diagnosed ALL (n=31) or lymphoblastic lymphoma (n=8). Grade 3-4 hyperbilirubinemia occurred frequently and at higher rates in patients aged 40-60 years (n=18) versus 18-39 years (n=21) (44% vs. 10%, P=0.025). However, eight of nine patients rechallenged with pegaspargase did not experience recurrent grade 3-4 hyperbilirubinemia. Grade 3-4 hypertriglyceridemia and hypofibrinogenemia were common (each 59%). Asparaginase activity at 7 days post-infusion reflected levels associated with adequate asparagine depletion, even among those with antibodies to pegaspargase. Complete response (CR)/CR with incomplete hematologic recovery was observed post-induction in 38 of 39 (97%) patients. Among patients with ALL, rates of minimal residual disease negativity by multi-parameter flow cytometry were 33% and 83% following induction phase I and phase II, respectively. Event-free and overall survival at 3 years (67.8% and 76.4%) compare favorably to outcomes observed in other series. These results demonstrate pegaspargase can be administered in the context of intensive multi-agent chemotherapy to adults aged ≤60 years with manageable toxicity. This regimen may serve as an effective backbone into which novel agents may be incorporated in future frontline studies. Trial registration: https://clinicaltrials. gov/ct2/show/NCT01920737
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Affiliation(s)
- Mark B Geyer
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY; Center for Cell Engineering, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Ellen K Ritchie
- Weill Cornell Medical College, Hematology and Medical Oncology, Joan and Sanford I. Weill Department of Medicine, New York
| | | | | | - Jessica Flynn
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Meier Hsu
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Sean M Devlin
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Mikhail Roshal
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York
| | - Qi Gao
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York
| | - Madhulika Shukla
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Jose M Salcedo
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Peter Maslak
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Martin S Tallman
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Dan Douer
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
| | - Jae H Park
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY; Center for Cell Engineering, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York
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5
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Kumar A, Casulo C, Advani RH, Budde E, Barr PM, Batlevi CL, Caron P, Constine LS, Dandapani SV, Drill E, Drullinsky P, Friedberg JW, Grieve C, Hamilton A, Hamlin PA, Hoppe RT, Horwitz SM, Joseph A, Khan N, Laraque L, Matasar MJ, Moskowitz AJ, Noy A, Palomba ML, Schöder H, Straus DJ, Vemuri S, Yang J, Younes A, Zelenetz AD, Yahalom J, Moskowitz CH. Brentuximab Vedotin Combined With Chemotherapy in Patients With Newly Diagnosed Early-Stage, Unfavorable-Risk Hodgkin Lymphoma. J Clin Oncol 2021; 39:2257-2265. [PMID: 33909449 DOI: 10.1200/jco.21.00108] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
PURPOSE To improve curability and limit long-term adverse effects for newly diagnosed early-stage (ES), unfavorable-risk Hodgkin lymphoma. METHODS In this multicenter study with four sequential cohorts, patients received four cycles of brentuximab vedotin (BV) and doxorubicin, vinblastine, and dacarbazine (AVD). If positron emission tomography (PET)-4-negative, patients received 30-Gy involved-site radiotherapy in cohort 1, 20-Gy involved-site radiotherapy in cohort 2, 30-Gy consolidation-volume radiotherapy in cohort 3, and no radiotherapy in cohort 4. Eligible patients had ES, unfavorable-risk disease. Bulk disease defined by Memorial Sloan Kettering criteria (> 7 cm in maximal transverse or coronal diameter on computed tomography) was not required for cohorts 1 and 2 but was for cohorts 3 and 4. The primary end point was to evaluate safety for cohort 1 and to evaluate complete response rate by PET for cohorts 2-4. RESULTS Of the 117 patients enrolled, 116 completed chemotherapy, with the median age of 32 years: 50% men, 98% stage II, 86% Memorial Sloan Kettering-defined disease bulk, 27% traditional bulk (> 10 cm), 52% elevated erythrocyte sedimentation rate, 21% extranodal involvement, and 56% > 2 involved lymph node sites. The complete response rate in cohorts 1-4 was 93%, 100%, 93%, and 97%, respectively. With median follow-up of 3.8 years (5.9, 4.5, 2.5, and 2.2 years for cohorts 1-4), the overall 2-year progression-free and overall survival were 94% and 99%, respectively. In cohorts 1-4, the 2-year progression-free survival was 93%, 97%, 90%, and 97%, respectively. Adverse events included neutropenia (44%), febrile neutropenia (8%), and peripheral neuropathy (54%), which was largely reversible. CONCLUSION BV + AVD × four cycles is a highly active and well-tolerated treatment program for ES, unfavorable-risk Hodgkin lymphoma, including bulky disease. The efficacy of BV + AVD supports the safe reduction or elimination of consolidative radiation among PET-4-negative patients.
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Affiliation(s)
- Anita Kumar
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Carla Casulo
- Wilmot Cancer Institute, University of Rochester, Rochester, NY
| | | | | | - Paul M Barr
- Wilmot Cancer Institute, University of Rochester, Rochester, NY
| | | | - Philip Caron
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | - Esther Drill
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | - Clare Grieve
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Paul A Hamlin
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Richard T Hoppe
- Stanford Cancer Institute, Stanford University, Stanford, CA
| | | | - Ashlee Joseph
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Niloufer Khan
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Leana Laraque
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | - Ariela Noy
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Heiko Schöder
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Shreya Vemuri
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Joanna Yang
- University of California San Francisco, San Francisco, CA
| | | | | | | | - Craig H Moskowitz
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL
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6
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O’Reilly EM, Lee JW, Zalupski M, Capanu M, Park J, Golan T, Tahover E, Lowery MA, Chou JF, Sahai V, Brenner R, Kindler HL, Yu KH, Zervoudakis A, Vemuri S, Stadler ZK, Do RKG, Dhani N, Chen AP, Kelsen DP. Randomized, Multicenter, Phase II Trial of Gemcitabine and Cisplatin With or Without Veliparib in Patients With Pancreas Adenocarcinoma and a Germline BRCA/PALB2 Mutation. J Clin Oncol 2020; 38:1378-1388. [PMID: 31976786 PMCID: PMC7193749 DOI: 10.1200/jco.19.02931] [Citation(s) in RCA: 225] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2019] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Five percent to 9% of pancreatic ductal adenocarcinomas (PDACs) develop in patients with a germline BRCA1/2 or PALB2 (gBRCA/PALB2+) mutation. Phase IB data from a trial that used cisplatin, gemcitabine, and veliparib treatment demonstrated a high response rate (RR), disease control rate (DCR), and overall survival (OS) in this population. We designed an open-label, randomized, multicenter, two-arm phase II trial to investigate cisplatin and gemcitabine with or without veliparib in gBRCA/PALB2+ PDAC. PATIENTS AND METHODS Eligible patients had untreated gBRCA/PALB2+ PDAC with measurable stage III to IV disease and Eastern Cooperative Oncology Group performance status of 0 to 1. Treatment for patients in arm A consisted of cisplatin 25 mg/m2 and gemcitabine 600 mg/m2 intravenously on days 3 and 10; treatment for patients in arm B was the same as that for patients in arm A, and arm A also received veliparib 80 mg orally twice per day on days 1 to 12 cycled every 3 weeks. The primary end point was RRs of arm A and arm B evaluated separately using a Simon two-stage design. Secondary end points were progression-free survival, DCR, OS, safety, and correlative analyses. RESULTS Fifty patients were evaluated by modified intention-to-treat analysis. The RR for arm A was 74.1% and 65.2% for arm B (P = .55); both arms exceeded the prespecified activity threshold. DCR was 100% for arm A and 78.3% for arm B (P = .02). Median progression-free survival was 10.1 months for arm A (95% CI, 6.7 to 11.5 months) and 9.7 months for arm B (95% CI, 4.2 to 13.6 months; P = .73). Median OS for arm A was 15.5 months (95% CI, 12.2 to 24.3 months) and 16.4 months for arm B (95% CI, 11.7 to 23.4 months; P = .6). Two-year OS rate for the entire cohort was 30.6% (95% CI, 17.8% to 44.4%), and 3-year OS rate was 17.8% (95% CI, 8.1% to 30.7%). Grade 3 to 4 hematologic toxicities for arm A versus arm B were 13 (48%) versus seven (30%) for neutropenia, 15 (55%) versus two (9%) for thrombocytopenia, and 14 (52%) versus eight (35%) for anemia. CONCLUSION Cisplatin and gemcitabine is an effective regimen in advanced gBRCA/PALB2+ PDAC. Concurrent veliparib did not improve RR. These data establish cisplatin and gemcitabine as a standard approach in gBRCA/PALB2+ PDAC.
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Affiliation(s)
| | | | | | | | - Jennifer Park
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Talia Golan
- Chaim Sheba Medical Center at Tel HaShomer, Tel HaShomer, Israel
| | - Esther Tahover
- The Oncology Institute, Sha’are Zedek Medical Center, Jerusalem, Israel
| | | | | | | | - Robin Brenner
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Kenneth H. Yu
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Shreya Vemuri
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | - Neesha Dhani
- Princess Margaret Cancer Centre-University Health Network, Toronto, Ontario, Canada
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7
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O'Reilly EM, Lee JW, Zalupski M, Capanu M, Park J, Golan T, Tahover E, Lowery MA, Chou JF, Sahai V, Brenner R, Kindler HL, Yu KH, Zervoudakis A, Vemuri S, Stadler ZK, Do RKG, Dhani NC, Chen AP, Kelsen DP. A randomized, multicenter, phase II trial of gemcitabine (G), cisplatin (C) +/- veliparib (V) in patients with pancreas adenocarcinoma (PDAC) and a known germline (g)BRCA/ PALB2 mutation. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.4_suppl.639] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
639 Background: gBRCA 1,2 mutations occur in 5-8% PDAC. Platinum and poly-ADP ribose polymerase inhibitors (PARPi) effective in BRCA-mut cancers. Phase I GC + V high RR 78%; combination may delay resistance in PDAC (O’Reilly, Cancer, 2018). Herein, we evaluate GC +/- V in a multi-national, randomized phase II trial. Methods: Eligibility: Untreated germline (g)BRCA, PALB2 mut PDAC; measurable stage III/IV; ECOG 0-1. Randomized 1:1 Arm A or B. Treatment: Arm A: G 600 mg/m2 IV, C 25 mg/m2 IV, d3 and 10, V 80 mg PO BID day 1-12, all q 3 weeks or Arm B: GC only. Primary endpoint: RECIST 1.1 response rate (RR). Simon 2-stage per arm: null hypothesis 10% vs promising 28%; type I, II error 10%. Secondary endpoints: progression-free survival (PFS), OS (m), disease control rate (CR+PR+SD), safety and correlative analyses. PFS, OS compared between arms using log-rank test and RR, DCR using Fisher’s exact test between arms. Results: N = 52 enrolled 01/14- 11/18. N = 2 withdrew Arm B. N = 50 for ITT. Male = 22 (44%), Female = 28. Median age = 64 years (range 37-82). BRCA1 N = 12, BRCA2 N = 35, PALB2 N = 3. Stage III N = 8; Stage IV N = 42. Hematologic Toxicity: Arm A vs Arm B: Gd 3-4 neutropenia 13 (48%) vs 7 (30%); Gd 3-4 platelets 15 (55%) vs 2 (9%); Gd 3-4 anemia 14 (52%) vs 8 (35%). Non-hematologic toxicity similar Arm A vs B. Exploratory analyses (combined Arms): Med OS if > 4 m platinum → PARPi: 23 m (95%CI 6.5- 53.9). Med OS by BRCA: BRCA1: 14 m (8.1- 18.5); BRCA2: 20.2 m (12.3- 24.4). Med OS by ECOG: ECOG 0: 23 m (13.8- 24.5); ECOG 1: 14.3 (8.1 vs 16.4). Two-year OS rate for entire cohort: 30.6% and 3-year OS: 17.8%. Conclusions: GC +/- V very active in gBRCA/PALB2 mut PDAC with high RR, PFS, OS with both A, B significantly exceeding threshold RR. Improved DCR arm A vs B, but with greater heme toxicity A vs B. Study confirms GC as reference treatment in gBRCA/PALB2 with durable survival in subset. Funding: National Cancer Institute, CTEP, Lustgarten Foundation, AbbVie. Clinical trial information: NCT01585805 . [Table: see text]
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Affiliation(s)
| | | | | | | | - Jennifer Park
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Talia Golan
- The Oncology Institute, Sheba Medical Center at Tel-Hashomer, Tel Aviv University, Tel Aviv, Israel
| | - Esther Tahover
- The Oncology Institute, Shaare Zedek Medical Center, Jerusalem, Israel
| | | | - Joanne F. Chou
- Memorial Sloan Kettering Cancer Center, New York City, NY
| | | | - Robin Brenner
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Kenneth H. Yu
- Memorial Sloan Kettering Cancer Center/Weill Cornell Medical College, New York, NY
| | | | - Shreya Vemuri
- Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | - Neesha C. Dhani
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Alice P. Chen
- Developmental Therapeutics Clinic/Early Clinical Trials Development Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD
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8
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Pugh L, Kessler M, Foreman M, Mathew P, Tan S, Vemuri S. 36IMPLEMENTATION OF AN ELECTRONIC HANDOVER TOOL WITHIN DEPARTMENT OF COMPLEX NEEDS: A QUALITY IMPROVEMENT PROJECT. Age Ageing 2019. [DOI: 10.1093/ageing/afz055.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- L Pugh
- Department of Complex Needs, Lincoln County Hospital
| | - M Kessler
- Department of Complex Needs, Lincoln County Hospital
| | - M Foreman
- Department of Complex Needs, Lincoln County Hospital
| | - P Mathew
- Department of Complex Needs, Lincoln County Hospital
| | - S Tan
- Department of Complex Needs, Lincoln County Hospital
| | - S Vemuri
- Department of Complex Needs, Lincoln County Hospital
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9
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Abstract
Precise determination of the peptide content in drug substance samples depends highly upon the particular peptide compound and methodology used. Four independent methods were evaluated and compared to determine which would produce the best experimental precision for analysis of thymalfasin (thymosin alpha-1). Four different methods were evaluated including elemental analysis (CHN), quantitative amino acid analysis (AAA), high-performance liquid chromatography (HPLC), and Kjeldahl. This study demonstrates that the AAA method is highly variable in one laboratory while quite precise in another laboratory. Similarly, HPLC results depended on the laboratory conducting the study with more precise values obtained under cGMP. On the contrary, the CHN method yielded highly precise [i.e. <2% coefficient of variation (CV)] values. As precise knowledge of protein content is fundamental for the compounding of final pharmaceutical product of a specific potency, the CHN analysis is recommended for peptide content determination of the drug substance thymalfasin.
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Affiliation(s)
- S Vemuri
- SciClone Pharmaceuticals, Inc., 901 Mariner's Island Blvd, San Mateo, CA 94404, USA.
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11
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Wang YJ, Shahrokh Z, Vemuri S, Eberlein G, Beylin I, Busch M. Characterization, stability, and formulations of basic fibroblast growth factor. Pharm Biotechnol 2002; 9:141-80. [PMID: 8914191 DOI: 10.1007/0-306-47452-2_2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Y J Wang
- Scios Inc., Mountain View, California 94043, USA
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12
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Abstract
A semiquantitative method for measuring the mechanical strength of gelatin ribbons was demonstrated using a universal tensile testing machine (Instron, model 1122). Molten gelatin formulations comprised of acid-bone gelatin, limed-hide gelatin, or their combinations were made, pored as gelatin films, and aged at 50% relative humidity (RH). Viscoelastic properties (mechanical strength) of five gelatin formulations were evaluated by determining elastic modulus, tensile strength, and ratio of tensile strength to elastic modulus of gelatin ribbons. This study demonstrated that a 3:1 ratio of acid-bone to limed-hide gelatin combination showed better viscoelastic properties than the other formulations studied.
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Affiliation(s)
- S Vemuri
- SciClone Pharmaceuticals, San Mateo, California, USA
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Vemuri S, Marchase RB. The inhibition of capacitative calcium entry due to ATP depletion but not due to glucosamine is reversed by staurosporine. J Biol Chem 1999; 274:20165-70. [PMID: 10400631 DOI: 10.1074/jbc.274.29.20165] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The capacitative Ca2+ entry pathway in J774 macrophages is rapidly inhibited by the amino sugar glucosamine. This pathway is also inhibited by treatments such as 2-deoxy-D-glucose (2dGlc) or glucose deprivation that inhibit glycolysis and lead to significant decreases in cellular ATP and other trinucleotides. We sought to determine whether glucosamine's effect on capacitative Ca2+ entry was also due to ATP depletion, as has been suggested recently for its link to insulin resistance. In contrast to brief treatments with 2dGlc, there was no significant decrease in ATP following exposure to glucosamine. In addition, the 2dGlc-mediated inhibition of capacitative Ca2+ influx was reversed by staurosporine, a microbial alkaloid that inhibits a broad range of protein kinases. Staurosporine was also able to reverse the inhibition of capacitative Ca2+ entry seen following other treatments that decreased cellular ATP levels, including cytochalasin B and iodoacetic acid. Other inhibitors of protein kinase C, including bisindolylmaleimide, K252a, H-7, and calphostin C, were unable to mimic this effect of staurosporine. However, the inhibition of capacitative Ca2+ influx in the presence of glucosamine was not reversed by staurosporine. These data indicate that the inhibitory action on capacitative Ca2+ entry of glucosamine is distinct from that caused by ATP depletion.
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Affiliation(s)
- S Vemuri
- Department of Cell Biology, The University of Alabama at Birmingham, Birmingham, Alabama 35294-0005, USA
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14
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Abstract
Liposome drug delivery systems are being developed for a variety of drugs. Scale-up process to larger size batches is often a monumental task for the process development scientists. This article reviews various aspects of process development work pertinent to aseptic process techniques for liposomes. This article also has discussed the bilayer properties of liposomes and showed the nomenclature used to classify the liposomes. Discussed is the pH gradient method to load liposomes. Issues and challenges involved in prolonging the shelf-life of liposomes is presented. This review covered the importance of complete removal of organic solvent that is used in the process. Finally the authors presented an HPLC method for quick identification and assay of various phospholipids in a mixture of phospholipids.
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Affiliation(s)
- S Vemuri
- Department of Pharmacy, School of Pharmacy, University of Rhode Island, Kingston 02881, USA
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15
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Abstract
A pH gradient across liposome bilayers was established in order to load a model drug (orciprenaline sulphate) into liposome vesicles. This method of liposome loading resulted in yields as high as 80-85% encapsulation. An eight-step process was designed to scale-up the process and was evaluated. In this process a diafiltration technique was successfully used to remove the excess orciprenaline sulphate present in the external medium. Finally, drug-loaded liposomes were lyophilized using lactose as an internal and external liposomal cryoprotectant. Five-month stability data for the liposomes is reported. An HPLC technique was used to determine the drug concentration and a laser light-scattering technique was employed to determine the liposome vesicle size and polydispersity factor. Liposomes prepared by the pH-gradient method showed high encapsulation efficiency. Upon storage at 2-8 degrees C the vesicle size increased and encapsulation efficiency decreased with time. These phenomena are attributed to gradual fusion of liposomes and loss of drug to the extra-liposomal media.
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Affiliation(s)
- S Vemuri
- Department of Pharmaceutics, College of Pharmacy, University of Rhode Island, Kingston 02881-0809
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Vemuri S, Yu CD, Roosdorp N. Effect of cryoprotectants on freezing, lyophilization, and storage of lyophilized recombinant alpha 1-antitrypsin formulations. PDA J Pharm Sci Technol 1994; 48:241-6. [PMID: 8000898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Stabilizing effect of several commonly used cryoprotectants, namely lactose, sucrose, and polyvinyl-pyrrolidone (PVP), on recombinant alpha 1-antitrypsin (rAAT) were studied. A solution of rAAT in a phosphate/citrate buffer (pH 7.0) was made with and without a given cryoprotectant and filled into small vials. The vials were frozen on shelf, at -40 degrees C in a lyophilizer. At the end of the freezing cycle, half of the batch was thawed at ambient temperature and the other half was continued to the completion of lyophilization. Sample vials taken before freezing, after thawing, and after lyophilization were analyzed for total rAAT protein, monomeric content, and elastase-inhibitory activity. Results indicated that neither freeze-and-thaw nor lyophilization caused any damage to rAAT, contrary to what was generally believed. The control formulation (i.e., without a cryoprotectant) performed as good as those containing cryoprotectants. Freezing rates and protein concentration in formulation did not influence the stability of rAAT either. Lyophilized rAAT samples retained the activity and purity during the 12 month stability period, at room temperature and 2-8 degrees C.
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Affiliation(s)
- S Vemuri
- Scios Nova, Mountain View, California 94043
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Abstract
The influence of sulphated ligand and pH on thermal denaturation of basic fibroblast growth factor (bFGF) was investigated by differential scanning calorimetry (DSC), and verified by fluorescence spectrophotometry. Purity of bFGF before and after heat denaturation was assessed by SDS-PAGE analysis. In DSC studies the samples were heated to 95 degrees C. The midpoint of the temperature change in the thermogram was designated as Tm. Sulphated ligand experiments were undertaken in potassium phosphate (pH 6.5) and sodium acetate buffers. Control thermograms (with no ligand) showed a Tm at 59 degrees C in potassium phosphate buffer. Higher Tm values were noted as sulphated ligand concentration was increased. Similarly when heparin was added, the Tm moved to a higher temperature. A ratio as low as 0.3:1 of heparin to bFGF, increased the Tm to 90 degrees C, which is a 31 degrees C shift in Tm. The effect of pH on thermal denaturation of bFGF was studied in a citrate-phosphate-borate buffer system. A shift in Tm from 46 to 65 degrees C was observed as the pH is changed from 4 to 8. Changes in protein conformation as a function of pH were monitored by fluorescence spectroscopy. It was found that a pH range from 5 to 9 is optimal for the stability of bFGF formulations. In a stability study it was noted that heparin protected bFGF from thermal denaturation only at high temperature.
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Affiliation(s)
- S Vemuri
- Scios Nova Inc., Mountain View, CA 94043
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Affiliation(s)
- J Geigert
- Quality Control Department, Chiron Corporation, Emeryville, California 94608
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Affiliation(s)
- S Vemuri
- Scios Nova Inc., Mountain View, California 94043
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Vemuri S, Barr WH, Propert DB. A correlation between digoxin plasma concentrations and systolic time intervals in hospitalized congestive heart failure patients. Int J Clin Pharmacol Ther Toxicol 1992; 30:388-93. [PMID: 1446955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Plasma digoxin level is at best an indirect measure of pharmacological response to digoxin in patients being treated for congestive heart failure. Systolic time interval (STI) measurement reflecting left ventricular function at the physiological site of action of digoxin, is both more direct and non-invasive. With a portable instrument to measure systolic time intervals, the measurement can also be convenient for hospital staff. A portable electrocardiogram (ECG) machine was modified to mimic the capabilities of a large, multichannel model. Upon satisfactory evaluation, it was employed in the collection of systolic time interval data from five hospitalized patients undergoing digoxin treatment. An attempt was made to show a relationship between STI indices and digoxin plasma concentrations. Additionally, a statistical comparison was made of change in STI (delta STI) and plasma digoxin concentration both before and after drug administrations. The change in pre-ejection period (delta PEP) values show a significant difference over the changes in total electromechanical systole (delta QS2) and the changes in left ventricular ejection time (delta LVET). In three congestive heart failure patients, the time course of the change in plasma concentration showed good correspondence with delta PEP.
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Affiliation(s)
- S Vemuri
- Department of Pharmacy and Pharmaceutics, Medical College of Virginia, Richmond
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Ferrell B, Grant M, Padilla G, Vemuri S, Rhiner M. The experience of pain and perceptions of quality of life: validation of a conceptual model. Hosp J 1991; 7:9-24. [PMID: 1820306 DOI: 10.1080/0742-969x.1991.11882702] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Pain is a common symptom of terminally ill cancer patients and a major challenge for hospice care. This paper presents a conceptual model of the relationship between pain and quality of life that was derived from the authors' previous research. The model should prove useful to hospice clinicians and researchers in evaluating the impact of palliative care on the quality of life.
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Lee TD, Vemuri S. MacProMass: a computer program to correlate mass spectral data to peptide and protein structures. Biomed Environ Mass Spectrom 1990; 19:639-45. [PMID: 2076462 DOI: 10.1002/bms.1200191103] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A program known as MacProMass has been written for Macintosh computers to assist in the analysis of mass spectral data of peptides and proteins. The program employs a user friendly, graphical interface and accommodates a variety of protein structures including cyclic peptides and multiple chain proteins. In addition to molecular mass calculations for positive and negative molecular ions, MacProMass also calculates elemental composition, amino acid composition, isoelectric point, surface free energy, and high-performance liquid chromatography index values for whole structures and peptide fragments resulting from enzymatic or chemical degradation. Users can program their own amino acid residues and terminal groups. In addition to search routines for both mass and sequence, theoretical fragment ions for peptide mass spectra can be calculated. Analysis of variant proteins is facilitated with a subroutine that systematically catalogs single amino acid substitutions that correspond to mass differences between observed and expected molecular ions. Interchain and intrachain disulfide bonds and other types of linkages are maintained throughout the chemical and enzymatic degradation operations.
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Affiliation(s)
- T D Lee
- Division of Immunology, Beckman Research Institute of the City of Hope, Duarte, CA 91010
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Vemuri S. Simulated analysis of patient waiting time in an outpatient pharmacy. Am J Hosp Pharm 1984; 41:1127-30. [PMID: 6741954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The cost of various options for reducing patient waiting time in an outpatient pharmacy was studied through computer simulation. The time required to complete prescription filling tasks was recorded for a baseline of five pharmacy employees: technicians A, B, and C, a typist , and a pharmacist. A fixed factorial design of 12 configurations was used in which the number of pharmacy employees was varied (one, two, or three technician As; one or two typists ; and one or two technician Bs). Patient waiting time for each configuration was determined through computer simulation. Pharmacy employee salaries were used to calculate the relative cost of six of the configurations that were predicted to reduce waiting time to less than 10 minutes. Configurations with additional technician Bs or typists , or both, exhibited reductions in total waiting time of comparable magnitude. One of these configurations was identified as the least expensive per daily hours saved. Without disturbing the operation of the pharmacy, computer simulation was found useful in identifying the least expensive method of reducing patient waiting time in an outpatient pharmacy.
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Vemuri S, Sambamurthy K. Digoxin radioimmunoassay: Part II--Measurement & Comparison of tritium method with 125I-labelled radioimmunoassay kits. Indian J Exp Biol 1980; 18:669-71. [PMID: 7429576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Vemuri S. Digoxin radioimmunoassay: effect of antiserum & trace source differences on trace binding. Indian J Exp Biol 1980; 18:16-8. [PMID: 7399572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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