Expression of fibroblast growth factor receptor 4 and clinical response to lenvatinib in patients with anaplastic thyroid carcinoma: a pilot study.

Abstract:

PURPOSE:Fibroblast growth factor receptor 4 (FGFR4) expression has association with tumor malignancy. In thyroid cancers, FGFR4 has been reported to be characteristically expressed in aggressive thyroid tumors, such as anaplastic thyroid carcinoma (ATC). METHODS:We investigated FGFR4 expression in patients with ATC and analyzed their clinical responses to lenvatinib. Primary tumor samples were obtained from 12 patients with ATC who underwent surgery or core needle biopsy. FGFR4 protein expression in all ATC samples was analyzed via immunohistochemistry, and the treatment efficacy of lenvatinib was evaluated. RESULTS:The proportion of FGFR4-positive cells in the samples ranged from 0 to 50%. Four patients had partial responses, and three patients had stable diseases as a best clinical response to lenvatinib. The median PFS durations of patients with none, weak, and moderate intensity were 0.5, 3.2 (95% CI 1.1-not estimable [NE]), and 4.6 (95% CI 1.1-NE) months, respectively (p = 0.003). CONCLUSIONS:Because FGFR4 was expressed in ATC tissues, the FGFR4 expression might be associated with the treatment efficacy of lenvatinib in a part of ATC patients. To clarify whether FGFR4 can serve as a prognostic or predictive factor for lenvatinib therapy, more cases must be accumulated.

journal_name

Eur J Clin Pharmacol

authors

Yamazaki H,Yokose T,Hayashi H,Iwasaki H,Osanai S,Suganuma N,Nakayama H,Masudo K,Rino Y,Masuda M

doi

10.1007/s00228-020-02842-y

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

703-709

issue

5

eissn

0031-6970

issn

1432-1041

pii

10.1007/s00228-020-02842-y

journal_volume

76

pub_type

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