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FDA Approval Summary: Cabozantinib for Differentiated Thyroid Cancer.

ABSTRACT: On September 17, 2021, the FDA approved cabozantinib (Cabometyx; Exelixis, Inc.) for the treatment of adult and pediatric patients 12 years of age and older with locally advanced or metastatic differentiated thyroid cancer (DTC) that has progressed following prior VEGFR-targeted therapy and who are radioactive iodine (RAI)-refractory or ineligible. This is the first approval for patients with RAI-refractory locally advanced or metastatic DTC who have progressed following prior therapy and the first approval in pediatric patients with DTC. The approval was based on data from COSMIC-311 (Study XL184-311, NCT03690388), an international, randomized, double-blind trial in which patients with locally advanced or metastatic RAI-refractory DTC that progressed during or following treatment with at least one VEGFR-targeting tyrosine kinase inhibitor were treated with either cabozantinib 60 mg orally once daily (N = 170) or placebo with best supportive care (N = 88). The primary efficacy outcome measures were progression-free survival (PFS) and overall response rate (ORR) by blinded independent central review per RECIST 1.1. The median PFS was 11.0 months [95% confidence interval (CI), 7.4-13.8] in the cabozantinib arm compared with 1.9 months (95% CI, 1.9-3.7) in the control arm, with an HR of 0.22 (95% CI, 0.15-0.31). The endpoint of ORR was not met. No new safety signals were identified with the exception of hypocalcemia, which was added as a warning in the product labeling.

SUBMITTER: Duke ES

PROVIDER: S-EPMC9529996 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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FDA Approval Summary: Cabozantinib for Differentiated Thyroid Cancer.

Duke Elizabeth S ES Barone Amy K AK Chatterjee Somak S Mishra-Kalyani Pallavi S PS Shen Yuan-Li YL Isikwei Emasenyie E Zhao Hong H Bi Youwei Y Liu Jiang J Rahman Nam Atiqur NA Wearne Emily E Leighton John K JK Stephenson Maritsa M Ojofeitimi Idara I Scepura Barbara B Nair Abhilasha A Pazdur Richard R Beaver Julia A JA Singh Harpreet H

Clinical cancer research : an official journal of the American Association for Cancer Research 20221001 19

On September 17, 2021, the FDA approved cabozantinib (Cabometyx; Exelixis, Inc.) for the treatment of adult and pediatric patients 12 years of age and older with locally advanced or metastatic differentiated thyroid cancer (DTC) that has progressed following prior VEGFR-targeted therapy and who are radioactive iodine (RAI)-refractory or ineligible. This is the first approval for patients with RAI-refractory locally advanced or metastatic DTC who have progressed following prior therapy and the fi ...[more]

PMID: 35679021

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Project description:In April 2017, the U.S. Food and Drug Administration granted regular approval to midostaurin for the treatment of adult patients with aggressive systemic mastocytosis (ASM), systemic mastocytosis with associated hematological neoplasm (SM-AHN), or mast cell leukemia (MCL). Approval was based on results from CPKC412D2201, a single-arm trial of midostaurin (100 mg orally twice daily) in previously treated or untreated patients. For the patients with ASM and SM-AHN, efficacy was established on the basis of confirmed complete remission (CR) plus incomplete remission (ICR) by modified Valent criteria with six cycles of midostaurin. There were no CRs reported; ICR was achieved by 6 of 16 patients (38%; 95% confidence interval [CI]: 15%-65%) with ASM and by 9 of 57 patients (16%; 95% CI: 7%-28%) with SM-AHN. Within the follow-up period, the median duration of response was not reached for the patients with ASM (range, 12.1+ to 36.8+ months) or with SM-AHN (range, 6.6+ to 52.1+ months). For the patients with MCL, efficacy was established on the basis of confirmed CR using modified 2013 International Working Group-Myeloproliferative Neoplasms Research and Treatment-European Competence Network on Mastocytosis criteria. Of 21 patients with MCL, 1 (5%) achieved a CR. Of 142 patients with SM evaluated for safety, 56% had dose modifications for toxicity, and 21% discontinued treatment due to a toxicity. Over 50% reported nausea, vomiting, or diarrhea, and ≥30% reported edema, musculoskeletal pain, fatigue, abdominal pain, or upper respiratory tract infection. New or worsening grade ≥3 lymphopenia, anemia, thrombocytopenia, or neutropenia developed in ≥20%. Although midostaurin is an active drug for treatment of advanced SM, it is not clear that the optimal dose has been identified. IMPLICATIONS FOR PRACTICE: Midostaurin is the only U.S. Food and Drug Administration-approved therapy for patients with systemic mastocytosis with associated hematological neoplasm and mast cell leukemia and is the only therapy approved for patients with aggressive systemic mastocytosis regardless of KIT D816V mutation status. Based on response rate and duration, midostaurin has meaningful clinical activity in these rare, life-threatening diseases.

Dataset Information

FDA Approval Summary: Cabozantinib for Differentiated Thyroid Cancer.

Publications

FDA Approval Summary: Cabozantinib for Differentiated Thyroid Cancer.

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