Patterns of response to crizotinib in recurrent glioblastoma according to ALK and MET molecular profile in two patients

Author:

Le Rhun Emilie123,Chamberlain Marc C4,Zairi Fahed35,Delmaire Christine6,Idbaih Ahmed78,Renaud Florence91011,Maurage Claude Alain91011,Grégoire Valérie91011

Affiliation:

1. Neuro-Oncology, Neurosurgery Department, University Hospital – CHRU Lille, France

2. Neurology, Medical Oncology Department, Oscar Lambret Center, Lille, France

3. Inserm, U1192, Lille, France

4. Neurology & Neurological Surgery, University of Washington, Fred Hutchinson Research Cancer Center, Seattle, WA 98109, USA

5. Neurosurgery Department, University Hospital – CHRU Lille, France

6. Neuroradiology Department, University Hospital – CHRU Lille, France

7. AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de neurologie 2-Mazarin; Sorbonne Universités, UPMC Univ Paris 06, UM 75

8. Inserm, U 1127, CNRS, UMR 7225, ICM, F-75013 Paris, France

9. Neuropathology Department, University Hospital – CHRU Lille, France

10. Lille University, Lille, France

11. UMR-S, 1172 F-59000 Lille, France

Abstract

Two patients with an unmethylated MGMT promoter and IDH1 (R132H) wild-type recurrent glioblastoma were treated with crizotinib. Prolonged stabilization of the disease (17 months) was achieved in the first case. Interestingly, anaplastic lymphoma kinase (ALK) expression and c-MET protein overexpression was observed. Conversely, no response to crizotinib was obtained in the second case with MET protein overexpression and c-MET amplification but no ALK expression or ALK gene amplification. These case studies suggest that novel targeted ALK inhibitors may provide relevant clinical benefit in selected cases in which driver mutations are demonstrable.

Publisher

Future Medicine Ltd

Subject

General Medicine

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