SAFETY UPDATE: Drug resistance emerging during therapy with dolutegravir and other integrase inhibitors

November 2015

SAFETY UPDATE: Drug resistance emerging during therapy with dolutegravir and other integrase inhibitors

November, 2015 -At least three B.C. patients have developed new integrase resistance mutations affecting dolutegravir and/or raltegravir and elvitegravir which emerged during treatment with dolutegravir 50 mg daily plus abacavir-lamivudine. Two of the three patients also developed new resistance to lamivudine and abacavir. One patient was treatment naïve and two were treatment experienced. None had previously documented drug resistance. Two of these patients achieved virologic suppression followed by rebound, while one never achieved a viral load <40 c/mL. Drug resistance emerged within 8-12 months after starting the dolutegravir-based regimen. Incomplete medication adherence appeared to be a contributing factor.

Tags:

Pharmacovigilance Initiative

Quality and Safety

HIV Clinical Care

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© Copyright BC Centre for Excellence in HIV/AIDS
St. Paul's Hospital 608–1081 Burrard Street, Vancouver, BC, Canada V6Z 1Y6
Tel: 604-806-8477 | Fax: 604-806-9044
General inquiries: info@bccfe.ca
Media inquiries: communications@bccfe.ca
(Please do not use any of these email addresses to send personal information or book an appointment. To book appointments or contact the H2H clinic, please call 604-416-1517 or fax: 604-564-4893. Do not send your or your client's personal information via email.)

© Copyright BC Centre for Excellence in HIV/AIDS
St. Paul's Hospital 608–1081 Burrard Street, Vancouver, BC, Canada V6Z 1Y6
Tel: 604-806-8477 | Fax: 604-806-9044
General inquiries: info@bccfe.ca
Media inquiries: communications@bccfe.ca
(Please do not use any of these email addresses to send personal information or book an appointment. To book appointments or contact the H2H clinic, please call 604-416-1517 or fax: 604-564-4893. Do not send your or your client's personal information via email.)

Our work serves clients and communities across British Columbia on lands and waters cared for and nurtured by the many distinct First Nations across the province. The BC-CfE humbly and gratefully acknowledge the stewards of these lands, particularly the xʷməθkʷəy̓əm (Musqueam), Sḵwx̱wú7mesh (Squamish), and səl̓ílwətaʔ (Tsleil-Waututh) on whose unceded, traditional and ancestral territories our offices are located.