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  • Year in Review
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THYROID CANCER IN 2019

Therapeutic breakthroughs for metastatic thyroid cancer

Multikinase inhibitors are effective treatments for thyroid cancers, acting primarily as antiangiogenic agents. This year, advances have been made in selective targeting of RET and BRAF in patients with medullary and anaplastic thyroid cancers, respectively. However, Hürthle cell carcinomas have a unique genomic landscape with no dominant truncal drivers, precluding simplistic approaches to therapeutic targeting.

Key advances

  • The combination of BRAF and MEK inhibition with dabrafenib and trametinib induces durable responses in patients with BRAFV600E-mutant anaplastic thyroid cancer, providing a road map for advancing the treatment of the most aggressive form of thyroid cancer2,4.

  • Two new selective RET inhibitors — BLU-667 and LOXO-292 — have potent antitumour effects in RET-mutant medullary thyroid carcinoma and RET-fusion papillary thyroid carcinomas, with a favourable safety profile5,6.

  • Hürthle cell carcinomas are a distinct entity characterized by mitochondrial dysfunction and widespread loss of heterozygosity9,10.

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Fig. 1: Highly selective versus promiscuous kinase driver inhibitors.

References

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Acknowledgements

The authors are supported in part by NIH RO1-CA50706, NIH RO1-CA72597, NIH P50-CA72012 and P30-CA008748.

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Correspondence to James A. Fagin.

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Competing interests

J.A.F. has received consultancy fees from Loxo Oncology and a grant from Eisai. V.T. declares no competing interests.

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Tiedje, V., Fagin, J.A. Therapeutic breakthroughs for metastatic thyroid cancer. Nat Rev Endocrinol 16, 77–78 (2020). https://doi.org/10.1038/s41574-019-0307-2

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