This grant aims to stimulate exploratory and developmental HIV/AIDS research focused on hearing, balance, taste, smell, voice, speech, and language disorders, specifically benefiting people living with HIV. The grant targets a wide range of organizations, including higher education institutions, nonprofits, for-profit organizations (including small businesses), and various government entities, of unspecified size, capable of conducting research. This is a SECTOR-SPECIFIC grant with a global geographic scope. Key filtering criteria include: research must be HIV/AIDS related and fall within NIDCD's mission areas (communication disorders), must address high-priority NIH Office of AIDS Research (OAR) areas, and only low-risk clinical trials are supported. This is a recurring funding opportunity (reissue of PAR-23-106) for exploratory/developmental research (R21 activity code) within the National Institutes of Health (NIH) framework.