{"id":53684,"date":"2026-04-14T23:39:56","date_gmt":"2026-04-14T23:39:56","guid":{"rendered":"https:\/\/i-base.info\/htb\/?p=53684"},"modified":"2026-04-14T23:41:05","modified_gmt":"2026-04-14T23:41:05","slug":"croi-2026-persistence-and-expansion-of-the-hiv-reservoir-on-long-term-art","status":"publish","type":"post","link":"https:\/\/i-base.info\/htb\/53684","title":{"rendered":"CROI 2026: Persistence and expansion of the HIV reservoir on long-term ART"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-53259 size-full\" src=\"https:\/\/i-base.info\/htb\/wp-content\/uploads\/2026\/02\/CROI-page-banner.png\" alt=\"\" width=\"620\" height=\"120\" srcset=\"https:\/\/i-base.info\/htb\/wp-content\/uploads\/2026\/02\/CROI-page-banner.png 1240w, https:\/\/i-base.info\/htb\/wp-content\/uploads\/2026\/02\/CROI-page-banner-300x58.png 300w, https:\/\/i-base.info\/htb\/wp-content\/uploads\/2026\/02\/CROI-page-banner-1024x198.png 1024w, https:\/\/i-base.info\/htb\/wp-content\/uploads\/2026\/02\/CROI-page-banner-768x149.png 768w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/p>\n<p><strong>Simon Collins, HIV i-Base<\/strong><\/p>\n<p><strong>A fascinating and compelling review of the current understanding of the HIV viral reservoir and a brief history of the key research was given in a plenary talk by John Mellors from the University of Pittsburgh.<\/strong><\/p>\n<p>This covered establishing the size of the reservoir (likely 10 x 10(11) cells with replicant-competent HIV in 1 million to 100 million), when and how these cells integrate and hide, with differences between men and women, and strategies to overcome the reservoir.<\/p>\n<p>Recent studies have reported notable responses using monoclonal and autologous antibodies in order to delay or sustain HIV viral rebound off-ART, including in the RIO study. Predictors of responses include activation-induced CD8 markers with ELISpot immune parkers in the absence of circulating virus. Updated results from RIO were also presented at CROI this year. [2]<\/p>\n<p>Next steps include more complicated multi-immune interventions and intensive dosing time schedules for example in ACTG 5374 and the UK AbVax studies that are both still enroling. [3, 4, 5, 6]<\/p>\n<p>References<\/p>\n<ol>\n<li>Mellors JW. HIV Reservoir: Persistence and Expansion Under Long-Term ART. Plenary lecture, CROI 2026, Denver.<br \/>\n<a href=\"https:\/\/www.croiwebcasts.org\/console\/player\/55147\">https:\/\/www.croiwebcasts.org\/console\/player\/55147<\/a><\/li>\n<li>Edgar J et al. Altered Viral Kinetics at ATI After Dual LS-bNAbs Plus ART: A Preliminary Analysis of RIO Arm B. CROI 2026, Oral abstract 134.<br \/>\n<a href=\"https:\/\/www.croiconference.org\/abstract\/1206-2026\/\">https:\/\/www.croiconference.org\/abstract\/1206-2026\/<\/a> (abstract)<br \/>\nhttps:\/\/www.croiwebcasts.org\/console\/player\/55099 (webcast)<\/li>\n<li>clinicalTrials.gov. Evaluation of Safety Immunogenicity and Efficacy of a Triple Immune Regimen in Adults Initiated on ART During Acute HIV-1.<br \/>\n<a href=\"https:\/\/clinicaltrials.gov\/study\/NCT06071767\">https:\/\/clinicaltrials.gov\/study\/NCT06071767<\/a><\/li>\n<li>ACTG website press release.<br \/>\n<a href=\"https:\/\/actgnetwork.org\/article\/actg-announces-launch-of-clinical-trial-evaluating-combination-of-three-novel-immune-based-therapies-for-hiv-cure\/\">https:\/\/actgnetwork.org\/article\/actg-announces-launch-of-clinical-trial-evaluating-combination-of-three-novel-immune-based-therapies-for-hiv-cure\/<\/a><\/li>\n<li>clinicalTrials.gov. Combination Vaccination and Broadly Neutralising Antibody Therapy in HIV (AbVax).<br \/>\n<a href=\"https:\/\/clinicaltrials.gov\/study\/NCT07054931\">https:\/\/clinicaltrials.gov\/study\/NCT07054931<\/a><\/li>\n<li>Abvax website.<br \/>\n<a href=\"https:\/\/www.abvaxstudy.org\/\">https:\/\/www.abvaxstudy.org\/<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Simon Collins, HIV i-Base A fascinating and compelling review of the current understanding of the HIV viral reservoir and a brief history of the key research was given in a plenary talk by John Mellors from the University of Pittsburgh. &hellip;<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,20,15],"tags":[346],"class_list":["post-53684","post","type-post","status-publish","format-standard","hentry","category-conference-reports","category-cure-research","category-basic-science-and-immunology","tag-croi-2026"],"_links":{"self":[{"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/posts\/53684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/comments?post=53684"}],"version-history":[{"count":2,"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/posts\/53684\/revisions"}],"predecessor-version":[{"id":53686,"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/posts\/53684\/revisions\/53686"}],"wp:attachment":[{"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/media?parent=53684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/categories?post=53684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i-base.info\/htb\/wp-json\/wp\/v2\/tags?post=53684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}