Frequency and Genomic Aspects of Intrinsic Resistance to Vismodegib in Locally Advanced Basal Cell Carcinoma

Andrey A Yurchenko, Oltin T Pop, Meriem Ighilahriz, Ismael Padioleau, Fatemeh Rajabi, Hayley J Sharpe, Nicolas Poulalhon, Brigitte Dreno, Amir Khammari, Marc Delord, Antonio Alberti, Nadem Soufir, Maxime Battistella, Samia Mourah, Fanny Bouquet, Ariel Savina, Andrej Besse, Max Mendez-Lopez, Florent Grange, Sandrine MonestierLaurent Mortier, Nicolas Meyer, Caroline Dutriaux, Caroline Robert, Philippe Saiag, Florian Herms, Jerome Lambert, Frederic J de Sauvage, Nicolas Dumaz, Lukas Flatz, Nicole Basset-Seguin, Sergey I Nikolaev

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

PURPOSE: Vismodegib is approved for the treatment of locally advanced basal cell carcinoma (laBCC), but some cases demonstrate intrinsic resistance (IR) to the drug. We sought to assess the frequency of IR to vismodegib in laBCC and its underlying genomic mechanisms.

EXPERIMENTAL DESIGN: Response to vismodegib was evaluated in a cohort of 148 laBCC patients. Comprehensive genomic and transcriptomic profiling was performed in a subset of five intrinsically resistant BCC (IR-BCC).

RESULTS: We identified that IR-BCC represents 6.1% of laBCC in the studied cohort. Prior treatment with chemotherapy was associated with IR. Genetic events that were previously associated with acquired resistance (AR) in BCC or medulloblastoma were observed in three out of five IR-BCC. However, IR-BCCs were distinct by highly rearranged polyploid genomes. Functional analyses identified hyperactivation of the HIPPO-YAP and WNT pathways at RNA and protein levels in IR-BCC. In vitro assay on the BCC cell line further confirmed that YAP1 overexpression increases the cell proliferation rate.

CONCLUSIONS: IR to vismodegib is a rare event in laBCC. IR-BCCs frequently harbor resistance mutations in the Hh pathway, but also are characterized by hyperactivation of the HIPPO-YAP and WNT pathways.

Original languageEnglish
Pages (from-to)1422-1432
Number of pages11
JournalClinical cancer research : an official journal of the American Association for Cancer Research
Volume28
Issue number7
DOIs
Publication statusPublished - 1 Apr 2022

Keywords

  • Anilides/therapeutic use
  • Antineoplastic Agents/pharmacology
  • Carcinoma, Basal Cell/drug therapy
  • Cerebellar Neoplasms/drug therapy
  • Hedgehog Proteins/genetics
  • Humans
  • Pyridines
  • Skin Neoplasms/drug therapy

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