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Selpercatinib-induced Redifferentiation and Enhanced Radioiodine Uptake in Radioiodine-refractory Thyroid Cancer: A Case Report

delete2026-07-01
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PRE
AI
Z
Zhang, Zizhen MD
Z
Zhou, Jinxin MD
L
Liu, Yang MD
张一帆 (Yifan Zhang)
DOI:10.1097/RLU.0000000000006431delete
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Abstract

Abstract

En 中文
A 32-year-old woman with metastatic papillary thyroid carcinoma, confirmed to harbor an NCOA4-RET fusion and progressing to radioiodine-refractory status, was initiated on selpercatinib. Following 10 months of treatment, serial thyroglobulin (Tg) measurements and post-therapeutic 131I scans after recombinant human TSH stimulation were performed. The scans demonstrated restored diffuse radioiodine uptake in previously refractory lung metastases, accompanied by a significant decline in Tg levels. This case illustrates that selpercatinib can induce effective redifferentiation in RET-altered radioiodine-refractory thyroid cancer, enabling successful radioiodine therapy.
Keywords:
selpercatinib
redifferentiation
radioiodine-refractory differentiated thyroid cancer
<sup xmlns:mrws="http://webservices.ovid.com/mrws/1.0">131</sup>I therapy
RET fusion

Journal

Clinical Nuclear Medicine cover
Clinical Nuclear Medicine
IF:
9.6
Papers:
1.1W
Citations:
6.9K

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