| Synonyms HGPRT, HGPRTase, HPRT + [5] | 
| Introduction Converts guanine to guanosine monophosphate, and hypoxanthine to inosine monophosphate. Transfers the 5-phosphoribosyl group from 5-phosphoribosylpyrophosphate onto the purine. Plays a central role in the generation of purine nucleotides through the purine salvage pathway. | 
| Target | 
| Mechanism HPRT1 inhibitors | 
| Active Org. | 
| Originator Org. | 
| Active Indication | 
| Inactive Indication | 
| Drug Highest PhaseApproved | 
| First Approval Ctry. / Loc. United States | 
| First Approval Date11 Sep 1953 | 
| Target | 
| Mechanism HPRT1 inhibitors | 
| Active Org. | 
| Originator Org. | 
| Active Indication | 
| Inactive Indication- | 
| Drug Highest PhasePreclinical | 
| First Approval Ctry. / Loc.- | 
| First Approval Date20 Jan 1800 | 
| Target | 
| Mechanism- | 
| Originator Org. | 
| Active Indication | 
| Inactive Indication- | 
| Drug Highest PhaseDiscovery | 
| First Approval Ctry. / Loc.- | 
| First Approval Date20 Jan 1800 | 
| Start Date26 Sep 2025 | 
| Sponsor / Collaborator | 
| Start Date29 May 2025 | 
| Sponsor / Collaborator | 
| Start Date26 Apr 2025 | 
| Sponsor / Collaborator | 
