Maraviroc Switch Collaborative Study

Summary

MARCH is an international, multicentre trial planning to enroll 380 HIV-1 infected patients who are currently on 2N(t)RTI + PI/r regimen and virologically suppressed. Participants will be randomized (1:2:2) to one of three treatment groups: to continue their current treatment regimen, maraviroc dose at 150 mg twice daily with PI/r, or maraviroc at 300 mg twice daily with 2N(t)RTI. As the participants population have HIV RNA \<200 copies/mL, the phenotypic assessment of tropism cannot be used to determine tropism, instead we will employ the genotypic assessment of tropism by sequencing the V3 loop of the HIV envelope. The main aim of this study is to investigate whether switching to maraviroc, in combination with either RTI or PI/r, is as good at keeping the HIV viral load undetectable as the combination of RTI with PI/r. The other aim is to see if switching to these combinations with maraviroc will improve some of the side effects that can be seen when people take combination therapy including RTI and PI/r. The study hypothesis is that in stable, virologically suppressed (plasma HIV-RNA \<200 copies/mL) patients with no history of prior virological failure, a switch to either MVC dosed at 300mg twice daily (bid) combined with the same 2N(t)RTI backbone regimen or MVC dosed at 150mg twice daily (bid) with the current PI/r (or 300mg bid at the discretion of the investigator if the PI/r is fosamprenavir/r) provides similar (non-inferior) antiretroviral efficacy compared to continuation of the current 2N(t)RTI + PI/r regimen.

Timeline

Start

2011-08

Primary completion

2015-12

Completion

2015-12

Publications

• Pett SL, Amin J, Horban A, Andrade-Villanueva J, Losso M, Porteiro N, Sierra Madero J, Belloso W, Tu E, Silk D, Kelleher A, Harrigan R, Clark A, Sugiura W, Wolff M, Gill J, Gatell J, Fisher M, Clarke A, Ruxrungtham K, Prazuck T, Kaiser R, Woolley I, Arnaiz JA, Cooper D, Rockstroh JK, Mallon P, Emery S; Maraviroc Switch (MARCH) Study Group. Maraviroc, as a Switch Option, in HIV-1-infected Individuals With Stable, Well-controlled HIV Replication and R5-tropic Virus on Their First Nucleoside/Nucleotide Reverse Transcriptase Inhibitor Plus Ritonavir-boosted Protease Inhibitor Regimen: Week 48 Results of the Randomized, Multicenter MARCH Study. Clin Infect Dis. 2016 Jul 1;63(1):122-32. doi: 10.1093/cid/ciw207. Epub 2016 Apr 5.
• Tu E, Swenson LC, Land S, Pett S, Emery S, Marks K, Kelleher AD, Kaye S, Kaiser R, Schuelter E, Harrigan R; MARCH Laboratory Group and the MARCH Study Group. Results of external quality assessment for proviral DNA testing of HIV tropism in the Maraviroc Switch collaborative study. J Clin Microbiol. 2013 Jul;51(7):2063-71. doi: 10.1128/JCM.00510-13. Epub 2013 Apr 17.

Drugs

Indications