Time To Response In Patients With Advanced Anaplastic Lymphoma Kinase (ALK)-Positive Non-Small-Cell Lung Cancer (NSCLC) Receiving Alectinib In The Phase II NP28673 And NP28761 Studies
Received 19 March 2019
Accepted for publication 29 October 2019
Published 13 November 2019 Volume 2019:10 Pages 125—130
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 4
Editor who approved publication: Professor Antonio Araujo
Shirish Gadgeel,1 Alice T Shaw,2 Fabrice Barlesi,3 Lucio Crino,4 James CH Yang,5 Anne-Marie Dingemans,6 Dong-Wan Kim,7 Filippo de Marinis,8 Mathias Schulz,8 Shiyao Liu,9 Ravindra Gupta,9 Vlatka Smoljanovic,10 Sai-Hong Ignatius Ou11
1Department of Internal Medicine, Division of Hematology and Oncology, The University of Michigan, Ann Arbor, MI 48109, USA; 2Center for Thoracic Cancers, Massachusetts General Hospital, Boston, MA, USA; 3Multidisciplinary Oncology and Therapeutic Innovations Department, Aix-Marseille University, Assistance Publique Hôpitaux de Marseille, Marseille 13005, France; 4Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) Srl I.R.C.C.S., Meldola, FC 47014, Italy; 5National Taiwan University Hospital and National Taiwan University Cancer Centre, Taipei City, Taiwan; 6Department of Pulmonology, Maastricht University Medical Centre, Maastricht 6229 HX, The Netherlands; 7Department of Internal Medicine, Seoul National University Hospital, Jongno-Gu, Seoul 03080, South Korea; 8Division of Thoracic Oncology, European Institute of Oncology IRCCS, Milan 20146, Italy; 9Genentech Inc., South San Francisco, CA, USA; 10F. Hoffmann-La Roche Ltd., Basel CH-4070, Switzerland; 11Division of Hematology-Medical Oncology, Department of Internal Medicine, University of California, Irvine School of Medicine, Orange, CA 92617, USA
Correspondence: Sai-Hong Ignatius Ou
University of California, Irvine School of Medicine, 1001 Health Sciences Road, Irvine, Orange, CA 92617, USA
Tel +1 714 456 8104
Introduction: Alectinib is a highly selective and potent ALK inhibitor, approved for the treatment of patients with metastatic ALK+ NSCLC based on results from the Phase II global NP28673 (NCT01801111) and North American NP28761 (NCT01871805) studies.
Methods: This exploratory analysis of two Phase II studies of alectinib (NP28673/NP28761) investigated time to systemic response (TTR) and time to central nervous system (CNS) response (TTCR) in patients with previously treated advanced anaplastic lymphoma kinase fusion gene-positive (ALK+) non-small-cell lung cancer. Patients (n=225) received 600 mg oral alectinib twice daily and had scans every 6/8 weeks (NP28673/NP28761).
Results: For NP28673 and NP28761, respectively: median follow-up was 21.3 months/17.0 months; most responders (72.6%/82.9%) responded by the first disease assessment; median TTR was 8 weeks (95% confidence interval [CI]: 8.00–8.14)/6 weeks (95% CI: 5.86–6.14); median TTCR in responders with measurable baseline CNS disease was 8 weeks (95% CI: 7.86–10.29)/6 weeks (95% CI: 5.71–not evaluable). Similar results were observed regardless of measurable/non-measurable disease.
Discussion: These data suggest that alectinib achieves a rapid response in patients, both systemically and in the CNS.
Keywords: alectinib, non-small-cell lung cancer, NP28673, NP28761, time to response
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