HIV Vaccines: Intersections of Basic and Clinical Science (P4)
April 16-19, 2026  | Beaver Run Conference Center, Breckenridge, CO, United States
Penny L Moore, Marit van Gils and Kevin O. Saunders
Scholarship Deadline: Jan. 7, 2026 | Abstract Deadline: Mar. 27, 2026 | Early Registration Deadline: Feb. 18, 2026
* Session Chair † Invited but not yet accepted | Program current as of February 25, 2026 1 AM | For the most up-to-date details, visit https://www.keystonesymposia.org
Thursday, April 16, 2026
4:00–8:00 PM Registration 3rd Floor Foyer
6:00–8:00 PM Welcome Mixer 3rd Floor Foyer
Friday, April 17, 2026
7:00–8:00 AM Breakfast Summit Gallery
8:00–8:10 AM Welcome Remarks (Joint) Colorado Ballroom
8:10–9:00 AM Keynote Address (Joint) Colorado Ballroom
  Alexandra Trkola, University of Zürich
HIV Vaccines: Learning from the Swiss X-BNAb Cohort for Prevention and Cure
 
9:00–11:30 AM Immune Interventions Interfacing HIV Prevention and Cure (Joint) Colorado Ballroom
  Mauricio A. Martins, University of Florida
Promoting Persistent bNAb Expression in NHPs through AAV-Mediated Gene Transfer
 
  Devi SenGupta, Gilead Sciences, Inc.
Long-acting ART in HIV Prevention and Cure
 
  Leonidas Stamatatos, Fred Hutchinson Cancer Research Center
Vaccination of PLWH, using 426C Derived Immunogens
 
  Cristina Ceriani, Emory University
Short Talk: Influence of SIV Gag Vaccination on CD8⁺ T Cell Immunity and SIV Viral Dynamics
 
  Nicolas M S Galvez Arriagada, Ragon Institute of Mass General, MIT and Harvard
Short Talk: Vectored Delivery of bNAbs Prevents Rebound of Clinical HIV Isolate During Antiretroviral Therapy Interruption
 
9:30–9:50 AM Coffee Break 1st Floor Foyer
9:50–9:55 AM Award Recipient Acknowledgement Colorado Ballroom
11:30–12:00 PM Los Alamos HIV Immunology and Sequence Databases User Workshop Colorado Ballroom
11:35–1:00 PM Poster Setup Peaks 1 - 3
11:35–2:30 PM On Own for Lunch
1:00–10:00 PM Poster Viewing Peaks 1 - 3
2:30–4:30 PM Symposia Spotlight 1: Driving CD4bs Antibodies Forward Colorado Ballroom
  Matthew Clark, Duke University
Cross-Clade HIV-1 Neutralizing Antibodies With Characteristics of bNAbs, Including VRC01, in Children
 
  Xuejun Chen, NIAID, National Institutes of Health
Three Sequential Escalating-Dose Immunizations Elicit VRC01-Class Antibody-Mediated Tier 2 HIV-1 Serum Neutralization in a Highly Stringent Mouse Model
 
  Ria Goswami, Weill Cornell Medicine
Germline-Targeting HIV SOSIP Trimer Immunizations Dampened Post-Rebound SHIV Loads in Infant Macaques
 
  James A Counts †, Duke University
Sequential Vaccination Elicits VH1-46 Class Orthologous Antibodies with Heterologous Reactivity and Neutralization Targeting the CD4-Binding Site In Rhesus Macaques
 
  Anna Romanov, Massachusetts Institute of Technology
DNA Origami Vaccines Program Antigen-Focused Germinal Centers
 
  Christopher A Cottrell, The Scripps Research Institute
Sequential Boosting with mRNA/LNP Immunogens Drives VRC01-Class Precursors B Cells To Acquire Key Mutations Allowing For Binding To Heterologous Wildtype HIV Env Trimers with the N276 Glycan
 
  Tom G Caniels, Amsterdam UMC
A Germline-Targeting Prime-Boost Regimen Drives Heterologous Neutralization Breadth of VRC01-class B Cells
 
  Jerome M Edwards, Fred Hutchinson Cancer Center
A Germline-Targeting Env-derived Immunogen Activates both VRC01- and CH235-class Naïve B Cells in a Phase 1 Clinical Trial
 
4:30–5:00 PM Coffee Available 3rd Floor Foyer
5:00–7:00 PM Keeping up with the Changing HIV Envelope Colorado Ballroom
  Penny L Moore, University of the Witwatersrand and National Institute for Communicable Diseases
African bNAb Immunogens
 
  Margaret E. Ackerman, Dartmouth College
Fc Effector Function in HIV Infection and Vaccination
 
  Aime Marcel Simon Tongo Passo, Center for Research on Emerging and Re-Emerging Diseases (CREMER/IMPM)
Viral Diversity in Central Africa: Known and Unknowns
 
  Gnana Gnanakaran, Los Alamos National Laboratory
Short Talk: Conformation of HIV Env Trimer on Intact Virions
 
  Ashwin N Skelly, University of Pennsylvania
Short Talk: Consistent Induction of V3-Glycan Broadly Neutralizing Antibodies by a Novel Two-Step Mechanism Informs Immunogen Design
 
7:00–8:00 PM Social Hour with Dinner Summit Gallery
7:30–10:00 PM Poster Session 1 Peaks 1 - 3
Saturday, April 18, 2026
7:00–8:00 AM Breakfast Summit Gallery
8:00–11:00 AM The Vaccine Pipeline: Integrating Basic and Clinical Insights Colorado Ballroom
  Florian Klein †, Uniklinik Koeln
Talk Title to be Announced
 
  Richard T. Wyatt, The Scripps Research Institute
Triggering bNAbs in Non-Human Primates
 
  Persephone Borrow, University of Oxford
Creating an Immune Environment Favorable for HIV-1 bnAb Induction
 
  Louis J. Picker, Oregon Health & Science University
Progress in CMV based Vaccines
 
  Hlelolwenkosi Z Mlimi, University of KwaZulu-Natal - Nelson R. Mandela School of Medicine
Short Talk: Immunological and Genetic Features Associated with The Development of Broadly Neutralizing Antibodies and Fc-Effector Functions in People Living with HIV-1 Subtype C
 
  Lily Zemelko, University of California - San Francisco (UCSF)
Short Talk: HIV DNA Therapeutic Vaccination Durably Boosts HIV-Specific CD8+ T Cell Magnitude and Proliferative Responses
 
9:00–9:20 AM Coffee Break 3rd Floor Foyer
11:00–1:00 PM Poster Setup Peaks 1 - 3
11:00–5:00 PM On Own for Lunch
1:00–10:00 PM Poster Viewing Peaks 1 - 3
1:30–2:45 PM Health Equity Panel (joint) sponsored by The Burroughs Wellcome Fund Colorado Ballroom
3:00–4:30 PM Career Roundtable (Joint) Colorado Ballroom
4:30–5:00 PM Coffee Available 3rd Floor Foyer
5:00–7:00 PM Targeting the Needle in the Haystack: Clinical Trials of Germline Targeting Immunogens Colorado Ballroom
  Kevin O. Saunders, Duke University
Induction of HCDR3-Binding and CD4 Mimicking Antibodies in HVTN300 and HVTN309
 
  Eunice Wambui Nduati, KEMRI, Wellcome Trust
Germline Targeting Immunogens and Precursors in African Populations
 
  Marit van Gils, Amsterdam UMC
Germline Targeting Immunogens in Human Clinical Trials; C101, C107, C110
 
  Rachael Parks, Fred Hutch
Short Talk: N332-GT5 Germline-Targeting Immunogen Elicits BG18-bnAb Precursors in a Phase I, Human Clinical Trial (HVTN 144)
 
  Catarina Mendes Silva, Amsterdam UMC
Short Talk: Proof-of-Concept Induction of HIV Broadly Neutralizing Antibody Lineages by Vaccination In Humans
 
7:00–8:00 PM Social Hour with Dinner Summit Gallery
7:30–10:00 PM Poster Session 2 Peaks 1 - 3
Sunday, April 19, 2026
7:00–8:00 AM Breakfast Summit Gallery
8:00–11:00 AM Looking to the Future: New Tools, Platforms and Delivery Systems Colorado Ballroom
  Eric A. Appel, Stanford University
Injectable Hydrogel Depot Technologies for Sustained Delivery of Vaccines
 
  Mangala Rao †, USMHRP, Walter Reed Army Institute of Research
Talk Title to be Announced
 
  Rory Henderson, Duke University
Large Language Models to Identify bnAbs and Design Vaccines to Them
 
  Nitesh Mishra, The Scripps Research Institute
Short Talk: De Novo, Machine Learning Enabled Discovery of Broadly Neutralizing Unmutated Human Antibodies Against HIV-1
 
  Hongying Duan †, NIH/VRC
Short Talk: Vaccine Elicitation of HIV-1 Cross-strain Neutralizing Antibodies Against Both V2 Apex and Fusion Peptide in Rhesus Macaques
 
  Austin Kriews, The Wistar Institute
Short Talk: Exposure to the HIV-1 gp41 Base Redirects the Specificity of Broadly Neutralizing Antibody Lineages
 
  Kshitij Wagh, Duke University
Short Talk: Induction of V2-apex Broadly-Neutralizing Antibodies by Signature-Based Prime and Boost mRNA Immunogens in Rhesus Macaques
 
9:00–9:20 AM Coffee Break 3rd Floor Foyer
11:00–5:00 PM On Own for Lunch
1:15–2:15 PM Meet the Editors (Joint) Colorado Ballroom
2:30–4:30 PM Symposia Spotlight 2: Looking Beyond the CD4bs Colorado Ballroom
  Fabian-Alexander Schleich, Karolinska Institutet
Vaccination Of Nonhuman Primates Elicits a Broadly Neutralizing Antibody Lineage Targeting a Quaternary Epitope on the HIV-1 Env trimer
 
  Joshua Carter, Stanford University
Minimally Mutated Silent Face Antibodies Enable Germline-targeted Vaccine Design for the Silent Face Epitope
 
  Rumi Habib, University of Pennsylvania
Env-Antibody Coevolution Identifies B Cell Priming as the Principal Bottleneck to HIV-1 V2 Apex Broadly Neutralizing Antibody Development
 
  Severin Coleon, Duke Human Vaccine Institute (DHVI)
Priming Diverse V2 Apex Antibodies with Unique HCDR3 Motifs Using Germline-Targeting HIV-1 Env Ferritin Nanoparticles in Rhesus Macaques
 
  Lorie Marchitto, University of Pennsylvania
Enhanced B Cell Priming Leads to Rapid Induction of Broadly Neutralizing HIV-1 Apex Antibodies
 
  Tianling Ou, Broad Institute
Sequential Immunogens Drive Affinity Maturation of HIV-1 V2-Apex Broadly Neutralizing Antibody Precursors
 
  Kevin Wiehe, Duke University
Reliable Elicitation of Broadly Neutralizing Antibodies in the Serum of V3 Glycan bnAb UCA Knock-in Mice Immunized with a 4-Immunogen Vaccine Regimen
 
  Jon Steichen †, The Scripps Research Institute
Germline-Targeting Vaccination Elicits HIV Broadly Neutralizing Antibodies In Nonhuman Primates
 
4:30–5:00 PM Coffee Available 1st Floor Foyer
5:00–6:30 PM B Cell Responses and Broadly-Neutralizing Antibodies: Trials and Tribulations (Joint) Colorado Ballroom
  Marina F. Caskey, Rockefeller University
Combined Immunotherapy with IL-15 Agonists and Broadly-Neutralizing Antibodies
 
  Paula M Cannon, University of Southern California, Keck School of Medicine
Engineering B Cells as in vivo bnAb Factories
 
  William Schief, Moderna, Scripps, and IAVI
Combining Germline Targeting Approaches Across Diverse bNAb Epitopes
 
6:30–6:45 PM Meeting Wrap-Up: Outcomes and Future Directions (Organizers) Colorado Ballroom
6:45–7:45 PM Social Hour with Dinner Summit Gallery
7:45–8:45 PM Entertainment
8:00–9:00 PM Cash Bar Peaks 1 - 3
Monday, April 20, 2026
12:00–11:59 PM Departure