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Witzig T, Sokol L, Kim WS, de la Cruz Vicente F, Martín García-Sancho A, Advani R, Roncero Vidal JM, de Oña Navarrete R, Marín-Niebla A, Rodriguez Izquierdo A, Terol MJ, Domingo-Domenech E, Saunders A, Bendris N, Mackey J, Leoni M, Foss F. Phase 2 trial of the farnesyltransferase inhibitor tipifarnib for relapsed/refractory peripheral T-cell lymphoma. Blood Adv 2024; 8:4581-4592. [PMID: 38991123 PMCID: PMC11401221 DOI: 10.1182/bloodadvances.2024012806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/03/2024] [Accepted: 05/19/2024] [Indexed: 07/13/2024] Open
Abstract
ABSTRACT A phase 2, international, open-label, nonrandomized, single-arm trial was conducted to evaluate the efficacy and safety of tipifarnib, a farnesyltransferase inhibitor, as monotherapy for relapsed/refractory peripheral T-cell lymphoma (PTCL) and to evaluate tumor mutation profile as a biomarker of response. Adults with relapsed/refractory PTCL received tipifarnib 300 mg orally twice daily for 21 days in a 28-day cycle. The primary end point was objective response rate (ORR); secondary end points included ORR, progression-free survival (PFS), duration of response (DOR), and adverse events (AEs) in specific subtypes. Sixty-five patients with PTCL were enrolled: n = 38 angioimmunoblastic T-cell lymphoma (AITL), n = 25 PTCL not otherwise specified, and n = 2 other T-cell lymphomas. The ORR was 39.7% (95% confidence interval [CI], 28.1-52.5) in all patients and 56.3% (95% CI, 39.3-71.8) for AITL. Median PFS was 3.5 months overall (954% CI, 2.1-4.4), and 3.6 months (95% CI, 1.9-8.3) for AITL. Median DOR was 3.7 months (95% CI, 2.0-15.3), and greatest in patients with AITL (7.8 months; 95% CI, 2.0-16.3). The median overall survival was 32.8 months (95% CI, 14.4 to not applicable). Tipifarnib-related hematologic AEs were manageable and included neutropenia (43.1%), thrombocytopenia (36.9%), and anemia (30.8%); other tipifarnib-related AEs included nausea (29.2%) and diarrhea (27.7%). One treatment-related death occurred. Mutations in RhoA, DNMT3A, and IDH2 were seen in 60%, 33%, and 27%, respectively, in the AITL tipifarnib responder group vs 36%, 9%, and 9% in the nonresponder group. Tipifarnib monotherapy demonstrated encouraging clinical activity in heavily pretreated relapsed/refractory PTCL, especially in AITL, with a manageable safety profile. This trial was registered at www.ClinicalTrials.gov as #NCT02464228.
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Affiliation(s)
- Thomas Witzig
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN
| | - Lubomir Sokol
- Department of Hematology and Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Won Seog Kim
- Division of Hematology-Oncology, Sungkyunkwan University School of Medicine Samsung Medical Center, Seoul, South Korea
| | | | - Alejandro Martín García-Sancho
- Hematology Department, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), Centro de Investigación Biomédica en Red - Cáncer (CIBERONC), Salamanca, Spain
| | - Ranjana Advani
- Division of Oncology, Department of Medicine, Stanford University, Stanford, CA
| | - Jose Maria Roncero Vidal
- Servei Hematologia ICO Girona, Hospital Universitari de Girona Dr Josep Trueta, Catalunya, Spain
| | | | - Ana Marín-Niebla
- Department of Hematology, Vall D'Hebron Institute of Oncology, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | | | | | - Eva Domingo-Domenech
- Hematology Department, Institut Català d'Oncologia, Hospital Duran i Reynals, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Barcelona, Spain
| | | | | | | | | | - Francine Foss
- Division of Hematology, Yale University School of Medicine, New Haven, CT
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Smith AE, Chan S, Wang Z, McCloskey A, Reilly Q, Wang JZ, Patel HV, Koshizuka K, Soifer HS, Kessler L, Dayoub A, Villaflor V, Adkins DR, Bruce JY, Ho AL, Perez CA, Hanna GJ, Gascó Hernández A, Saunders A, Dale S, Gutkind JS, Burrows F, Malik S. Tipifarnib Potentiates the Antitumor Effects of PI3Kα Inhibition in PIK3CA- and HRAS-Dysregulated HNSCC via Convergent Inhibition of mTOR Activity. Cancer Res 2023; 83:3252-3263. [PMID: 37339176 PMCID: PMC10543974 DOI: 10.1158/0008-5472.can-23-0282] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/23/2023] [Accepted: 06/16/2023] [Indexed: 06/22/2023]
Abstract
Outcomes for patients with recurrent/metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) are poor, with median overall survival (OS) ranging from 6 to 18 months. For those who progress on standard-of-care (chemo)immunotherapy, treatment options are limited, necessitating the development of rational therapeutic strategies. Toward this end, we targeted the key HNSCC drivers PI3K-mTOR and HRAS via the combination of tipifarnib, a farnesyltransferase (FTase) inhibitor, and alpelisib, a PI3Kα inhibitor, in multiple molecularly defined subsets of HNSCC. Tipifarnib synergized with alpelisib at the level of mTOR in PI3Kα- or HRAS-dependent HNSCCs, leading to marked cytotoxicity in vitro and tumor regression in vivo. On the basis of these findings, the KURRENT-HN trial was launched to evaluate the effectiveness of this combination in PIK3CA-mutant/amplified and/or HRAS-overexpressing R/M HNSCC. Preliminary evidence supports the clinical activity of this molecular biomarker-driven combination therapy. Combined alpelisib and tipifarnib has potential to benefit >45% of patients with R/M HNSCC. By blocking feedback reactivation of mTORC1, tipifarnib may prevent adaptive resistance to additional targeted therapies, enhancing their clinical utility. SIGNIFICANCE The mechanistically designed, biomarker-matched strategy of combining alpelisib and tipifarnib is efficacious in PIK3CA- and HRAS-dysregulated head and neck squamous carcinoma and could improve outcomes for many patients with recurrent, metastatic disease. See related commentary by Lee et al., p. 3162.
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Affiliation(s)
| | | | - Zhiyong Wang
- Moores Cancer Center, University of California San Diego, La Jolla, California
| | | | | | | | | | - Keiichi Koshizuka
- Moores Cancer Center, University of California San Diego, La Jolla, California
| | | | | | | | | | | | | | - Alan L. Ho
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - Cesar A. Perez
- Sarah Cannon Research Institute at Florida Cancer Specialists, Orlando, Florida
| | | | | | | | | | - J. Silvio Gutkind
- Moores Cancer Center, University of California San Diego, La Jolla, California
- Department of Pharmacology, University of California San Diego, La Jolla, California
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Combinatorial approaches for mitigating resistance to KRAS-targeted therapies. Biochem J 2022; 479:1985-1997. [PMID: 36065754 PMCID: PMC9555794 DOI: 10.1042/bcj20220440] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/05/2022] [Accepted: 09/05/2022] [Indexed: 11/24/2022]
Abstract
Approximately 15% of all cancer patients harbor mutated KRAS. Direct inhibitors of KRAS have now been generated and are beginning to make progress through clinical trials. These include a suite of inhibitors targeting the KRASG12C mutation commonly found in lung cancer. We investigated emergent resistance to representative examples of different classes of Ras targeted therapies. They all exhibited rapid reactivation of Ras signaling within days of exposure and adaptive responses continued to change over long-term treatment schedules. Whilst the gene signatures were distinct for each inhibitor, they commonly involved up-regulation of upstream nodes promoting mutant and wild-type Ras activation. Experiments to reverse resistance unfortunately revealed frequent desensitization to members of a panel of anti-cancer therapeutics, suggesting that salvage approaches are unlikely to be feasible. Instead, we identified triple inhibitor combinations that resulted in more durable responses to KRAS inhibitors and that may benefit from further pre-clinical evaluation.
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Khan I, Darido C. Squamous Cell Carcinoma—A Summary of Novel Advances in Pathogenesis and Therapies. Cancers (Basel) 2022; 14:cancers14102523. [PMID: 35626124 PMCID: PMC9140102 DOI: 10.3390/cancers14102523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 05/12/2022] [Indexed: 01/25/2023] Open
Abstract
Squamous cell carcinomas (SCCs) are cancers of epithelial cells lining the aerodigestive and genitourinary tract [...]
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Affiliation(s)
- Imran Khan
- Peter MacCallum Cancer Centre, 305 Grattan St., Melbourne, VIC 3000, Australia;
- The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Charbel Darido
- Peter MacCallum Cancer Centre, 305 Grattan St., Melbourne, VIC 3000, Australia;
- The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia
- Correspondence: ; Tel.: +61-3-8559-7111; Fax: +61-3-8559-5489
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