Olaparib for metastatic breast cancer in a patient with a germline PALB2 variant

Autor: Athina Kostara, Hakima Harrach, Mattea Reinisch, Mark H Dyson, Rita K. Schmutzler, Ouafaa Chiari, Sherko Kuemmel, Katja Ziegler-Löhr
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: npj Breast Cancer, Vol 6, Iss 1, Pp 1-4 (2020)
NPJ Breast Cancer
ISSN: 2374-4677
Popis: There is a strong biologic rationale that poly(adenosine diphosphate-ribose) polymerase (PARP) inhibitors may benefit a broader range of metastatic breast cancer (MBC) patients than covered by current approvals, which require a germline BRCA1/2 sequence variant affecting function. We report a patient with germline/somatic BRCA1/2 wild-type MBC, who had a dramatic response to the PARP inhibitor olaparib of at least 8 months’ duration. The patient is a 37-year-old woman with recurrent, hormone receptor-positive, HER2-negative MBC that had progressed despite hormonal therapy and palbociclib. Sensitivity to olaparib was likely conferred by a germline sequence variant affecting function in PALB2 (exon 1, c.18G>T, p.(=)). This case documenting activity of olaparib monotherapy in germline/somatic BRCA1/2 wild-type MBC illustrates that the clinical potential of PARP inhibition in MBC extends beyond currently approved indications to additional patients whose tumors have (epi)genetic changes affecting homologous recombination repair.
Databáze: OpenAIRE