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Ref Type Journal Article
PMID (29223982)
Authors Cheng FT, Ou-Yang F, Lapke N, Tung KC, Chen YK, Chou YY, Chen SJ
Title Pazopanib Sensitivity in a Patient With Breast Cancer and FGFR1 Amplification.
Journal Vol Issue Date Pages Journal Short Title
Journal of the National Comprehensive Cancer Network : JNCCN 15 12 2017 Dec 1456-1459 J Natl Compr Canc Netw
URL
Abstract Text Treatment options for patients with hormone receptor-positive (HR+), HER2-negative (HER2-) breast cancer and resistance to endocrine therapy remain limited. An interesting therapeutic target in these patients is fibroblast growth factor receptor 1 (FGFR1). FGFR1 is amplified in approximately 11% of patients with breast cancer, especially those with HR+ disease. This report presents a patient with metastatic HR+ HER2- breast cancer harboring an FGFR1 amplification who was resistant to endocrine therapy but responded to pazopanib, a multi-tyrosine kinase inhibitor with FGFR-inhibiting activity. Upon pazopanib treatment, the patient's brain lesions nearly disappeared, and she experienced therapeutic changes in the lung and an improvement of liver function. This case suggests that pazopanib may be a promising agent for the treatment of patients with breast cancer and FGFR1 amplifications.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
FGFR1 amp Her2-receptor negative breast cancer predicted - sensitive Pazopanib Case Reports/Case Series Actionable In a clinical case study, a patient with ERBB2 (HER2)-receptor negative breast cancer harboring FGFR1 amplification demonstrated antitumor activity when treated with Votrient (pazopanib), including a near complete loss of brain lesions and improved function of the liver (PMID: 29223982). 29223982