Endocrine oncology

Outcome of first-line chemotherapy for anaplastic thyroid cancer—a multicenter registry analysis

J Clin Endocrinol MetabPublished Retrospective multicentre registry study

Authors' conclusion

In this registry study, CP showed no survival benefit in ATC; outcomes depended on disease burden and resectability

Study context

Population
Adults with histologically confirmed anaplastic thyroid cancer (ATC) treated with first-line cytotoxic chemotherapy at 7 German tertiary centres (2000–2024)
Participants
158 adults
Exposure
First-line carboplatin/paclitaxel (CP) ± radiotherapy vs other cytotoxic chemotherapy regimens
  • CPn = 97
  • Other chemotherapyn = 61reference
Outcome
PFS and OS

Main finding

As reported in the abstract

Progression-free survival (PFS)

102 vs 89 days

log-rank P = .23

CP

Overall survival (OS)

278 vs 295 days

P = 0.50

CP

Observational data: associations, not effects.

Further findings

Complete response

P = 0.46

Mortality risk factors (multivariable Cox analysis)

Age ≥65 years, lymph node metastasis and distant metastasis associated with higher mortality risk
Surgery associated with lower mortality risk
CP not associated with improved OS

Second-line treatment outcome

Outcome not different for chemotherapy vs kinase inhibition ± immunotherapy

Original publication

Outcome of first-line chemotherapy for anaplastic thyroid cancer—a multicenter registry analysis. J Clin Endocrinol Metab. Published 21 April 2026. doi:10.1210/clinem/dgag177

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