| Abbreviation | Definition |
|---|---|
| GTP | Gene Therapy Program |
| GTTP | Group Therapy Training Program |
| HAART | Highly Active Anti-Retroviral Therapy |
| HAART | Highly Active Antiretroviral Therapy the |
| HAART | Highly Active Antiretroviral Therapy This |
| HAART | highly active antiretroviral therapy Treatment |
| HAART | Histamine Activating Antiviral Regressive Therapy |
| HAAT | Highly Active Antiretroviral therapy |
| HAET | Hepatic Arterial Embolisation Therapy |
| HART | Heart Avoiding Radiation Therapy |
| HBVT | Home Based Vision Therapy |
| HDAT | High Dose Antipsychotic Therapy |
| HDC | High-Dose Chemotherapy |
| HEART | Holistic Education and Art Recreation Therapy |
| HETI | Horses in Education and Therapy International |
| HFOT | High Flow Oxygen Therapy |
| HGHT | Human Growth Hormone Therapy |
| HGT | Human Gene Therapy |
| HGTS | Human Gene Therapy Subcommittee |
| HHMT | Helping Hands Muscular Therapy |