Heliyon (Jan 2024)

Coexistence of a novel SRBD1-ALK, ALK-CACNA1D double-fusion in a lung adenocarcinoma patient and response to alectinib: A case report

  • Xiaohong Xie,
  • Wenhui Guan,
  • Wenting Huang,
  • Juhong Jiang,
  • Haiyi Deng,
  • Yijia Li,
  • Huixin Jiang,
  • Ming Liu,
  • Chengzhi Zhou

Journal volume & issue
Vol. 10, no. 2
p. e24373

Abstract

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A Chinese male patient with advanced lung adenocarcinoma experienced disease progression one and a half years after receiving first-line immunochemotherapy. The second biopsy was performed and tissue immunohistochemistry revealed Anaplastic lymphoma kinase (ALK) expression in the cytoplasm of tumor cells, so he began to receive Alectinib treatment. Then the next generation sequencing found double fusion variants of S1 RNA binding domain 1 (SRBD1)- ALK and ALK- Calcium voltage-gated channel subunit alpha1 D (CACNA1D). After continuous Alectinib treatment for 7 months, almost complete response (CR) was achieved. The patient is currently taking Alectinib for 13 months, the condition is stable, and is waiting for the next cycle of efficacy evaluation.

Keywords