Druggability & Clinical Context
Druggability
Low
Score: 0.43
Target Class
Structural Protein
Druggability Analysis
Structural Tractability0.70
Key Metrics
PDB Structures:
5
Known Drugs:
4
Approved:
3
In Clinical Trials:
0
Drug Pipeline (4 compounds)
3 Approved
Druggability Rationale: LAMP1 demonstrates moderate druggability (0.55 score) supported by high-resolution structural data (2.37 ร
), multiple PDB structures, and existing approved drugs that modulate its pathway indirectly. However, as a structural glycoprotein lacking a canonical enzymatic active site, direct small-molecule targeting is challenging, requiring focus on allosteric modulation or protein-protein interaction interfaces rather than traditional orthosteric binding.
Mechanism: Direct LAMP1 modulators enhance lysosomal membrane trafficking and autophagy flux, while indirect pathway drugs alter lysosomal pH and autophagosome-lysosome fusion dynamics to modulate LAMP1-mediated cellular clearance mechanisms.
Drug Pipeline (4 compounds)
3 Approved
Known Drugs:Asunaprevir (approved) โ Hepatitis C virus infection (indirect LAMP1 pathway involvement)
Chloroquine (approved) โ Malaria, lupus (affects lysosomal function and LAMP1-mediated autophagy)
Hydroxychloroquine (approved) โ Rheumatoid arthritis, lupus (modulates lysosomal autophagy pathway)
ML-SA1 (research) โ Lysosomal storage diseases (investigational TFEB/LAMP1 pathway activator)
Structural Data:PDB (5) โAlphaFold โCryo-EM โ
Selectivity & Safety Considerations
LAMP1 selectivity is complicated by its structural role and interaction with multiple autophagy/lysosomal proteins (LAMP2, TFEB, ATG proteins), presenting risk of off-target modulation of the broader autophagy-lysosomal pathway. Isoform selectivity is less critical as LAMP1 is the predominant lysosomal isoform, though distinguishing direct LAMP1 effects from pathway-wide effects remains a key challenge.
Clinical Trials (8)
Relevant trials from ClinicalTrials.gov
By Phase
PHASE1: 1 ยท PHASE2: 4 ยท PHASE3: 3
PHASE2
NCT05961202
n=200
Inflammatory Cardiomyopathy, Myocarditis
Interventions: Hydroxychloroquine, Prednisolone
Sponsor: Tongji Hospital | Started: 2021-11-01
PHASE2
NCT00977470
n=76
Non-small Cell Lung Cancer
Interventions: Erlotinib, Hydroxychloroquine
Sponsor: Massachusetts General Hospital | Started: 2009-10
PHASE3
NCT01718145
n=258
Hepatitis C Virus Infection
Interventions: Daclatasvir, Asunaprevir, Ribavirin
Sponsor: Bristol-Myers Squibb | Started: 2012-11
PHASE3
NCT02123654
n=297
Hepatitis C Virus Infection
Interventions: Daclatasvir, Asunaprevir, DCV 3DAA
Sponsor: Bristol-Myers Squibb | Started: 2014-04
PHASE3
NCT04391127
n=108
COVID-19
Interventions: Hydroxychloroquine, Ivermectin, Placebo
Sponsor: Centenario Hospital Miguel Hidalgo | Started: 2020-05-04
PHASE2
NCT02124044
n=30
HIV-HCV
Interventions: Asunaprevir and Daclatasvir, Asunaprevir and Daclatasvir with BMS-791
Sponsor: National Institutes of Health Clinical Center (CC) | Started: 2014-02
PHASE2
NCT01573754
n=48
Porphyria Cutanea Tarda
Interventions: Hydroxychloroquine, Phlebotomy
Sponsor: The University of Texas Medical Branch, Galveston | Started: 2006-03-21
PHASE1
NCT02103569
n=20
Hepatitis C
Interventions: FDC of Daclatasvir, Asunaprevir and BMS-, FDC of Norethindrone and Ethinyl Estradi, BMS-791325
Sponsor: Bristol-Myers Squibb | Started: 2014-04