CD38

ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1

Score: 0.645 Price: $0.65 Medium Druggability Status: active Wiki: CD38
🧠 Neurodegeneration
HYPOTHESES
2
PAPERS
22
KG EDGES
313
DEBATES
0

3D Protein Structure

🧬 CD38 — PDB 1YH3 Click to expand

Experimental structure from RCSB PDB | Powered by Mol*

Druggability & Clinical Context

Druggability
Medium
Score: 0.61
Clinical Stage
Approved
Target Class
Enzyme
Safety
0.50
Druggability Analysis
Drug Development0.90
Structural Tractability0.95
Target Class0.85
Safety Profile0.50
Key Metrics
PDB Structures:
61
Known Drugs:
2
Approved:
2
In Clinical Trials:
0
Drug Pipeline (2 compounds)
2 Approved
Therapeutic Areas:
Multiple myeloma Alzheimer's disease Parkinson's disease Age-related neurodegeneration NAD+ metabolism disorders Cognitive decline Other hematologic malignancies
Druggability Rationale: CD38 is highly druggable (0.90 score) due to its well-characterized catalytic site, extensive structural data (61 PDB structures at 1.45 Å resolution), and proven clinical validation with two approved monoclonal antibodies (daratumumab, isatuximab) demonstrating target engagement. The enzyme's defined NAD+ binding pocket and established mechanism make it amenable to both antibody and small molecule inhibitor approaches.
Mechanism: Monoclonal antibody targeting or small molecule inhibitor of NAD+ consuming activity
Drug Pipeline (2 compounds)
2 Approved
Known Drugs:
Daratumumab (approved) — Multiple myeloma
Isatuximab (approved) — Multiple myeloma
Structural Data:
PDB (61) ✓AlphaFold ✓Cryo-EM ✓
1YH31ZVM2EF12EG92HCT+56 more
UniProt: H0Y950
Binding Pocket Analysis:

The NAD+ binding pocket is well-characterized across 61 crystal structures, featuring a defined active site with metal coordination (typically Zn2+) and substrate recognition elements that accommodate the adenosine and ribose moieties. Monoclonal antibody epitopes are mapped on the extracellular domain, while small molecule inhibitors target the catalytic cleft accessible from the cell surface.

🧬 3D Protein Structure

🧬 CD38 — PDB 1YH3 Click to expand interactive 3D viewer

Experimental structure from RCSB PDB | Powered by Mol* | Rotate: click+drag | Zoom: scroll

Selectivity & Safety Considerations

CD38 has limited tissue selectivity concerns as a single gene target, but selectivity challenges may arise from its dual catalytic activities (ADP-ribosyl cyclase and cyclic ADP-ribose hydrolase) requiring differentiated inhibition. Off-target risks for small molecule inhibitors include related ADP-ribosyl cyclases (CD157/BST-1), necessitating careful structural design to avoid cross-reactivity.

3D Protein Structure

PDB: Open in RCSB AlphaFold model

Interactive 3D viewer powered by RCSB PDB / Mol*. Use mouse to rotate, scroll to zoom.

Clinical Trials (8)

Relevant trials from ClinicalTrials.gov

Active
7
Completed
1
Total Enrollment
2,425
By Phase
PHASE1: 2 · PHASE2: 5 · PHASE3: 1
Elranatamab/Lenalidomide Consolidation and/or Elranatamab Maintenance Versus Standard of Care After D-VRd Induction in T Recruiting
PHASE3 NCT06918002 n=824
Multiple Myeloma, Newly Diagnosed
Interventions: Elranatamab, Lenalidomide (Revlimid®), Daratumumab SC (Darzalex)
Sponsor: Intergroupe Francophone du Myelome | Started: 2025-07-09
Study to Evaluate the Safety and Efficacy of Daratumumab and Carfilzomib-based Induction/Consolidation/Maintenance Thera Recruiting
PHASE2 NCT06140966 n=54
Multiple Myeloma, Primary Plasma Cell Leukemia, Extramedullary Multiple Myeloma
Interventions: Daratumumab, Carfilzomib, Lenalidomide
Sponsor: Union Hospital, Tongji Medical College, Huazhong University | Started: 2023-10-20
A 3-cohort Randomized Study Evaluating the Role of New Immunotherapeutic Agents and of Allogeneic Hematopoietic Stem Cel Recruiting
PHASE2 NCT06860269 n=1200
Acute Lymphoblastic Leukemia
Interventions: Randomization + Blinatumomab + chemother, Randomization + Standard frontline T-ALL, Randomization + Isatuximab + Standard fr
Sponsor: Assistance Publique - Hôpitaux de Paris | Started: 2025-05-06
Expression-linked and R-ISS-adapted Stratification for First Line Therapy in Multiple Myeloma Patients Recruiting
PHASE2 NCT05665140 n=100
Newly Diagnosed Multiple Myeloma
Interventions: Isatuximab, Lenalidomide, Bortezomib
Sponsor: University Hopsital Schleswig Holstein Campus Lübeck | Started: 2023-02-03
A Study of Isatuximab Added to Standard CyBorD Induction and Lenalidomide Maintenance Treatments in ND-TEMM Active Not Recruiting
PHASE2 NCT04786028 n=72
Multiple Myeloma
Interventions: Isatuximab
Sponsor: Canadian Myeloma Research Group | Started: 2021-12-08
Isatuximab, Pomalidomide, Elotuzumab and Dexamethasone in Relapsed and/or Refractory Multiple Myeloma Active Not Recruiting
PHASE2 NCT04835129 n=28
Multiple Myeloma
Interventions: Isatuximab (for run-in portion), Isatuximab (for expansion), Pomalidomide
Sponsor: Medical College of Wisconsin | Started: 2022-01-10
A Study of Teclistamab With Other Anticancer Therapies in Participants With Multiple Myeloma Active Not Recruiting
PHASE1 NCT04722146 n=140
Multiple Myeloma
Interventions: Teclistamab, Daratumumab, Pomalidomide
Sponsor: Janssen Research & Development, LLC | Started: 2021-03-12
A Study of JNJ-54767414 (Daratumumab) in Combination With Lenalidomide and Dexamethasone in Japanese Participants With P Completed
PHASE1 NCT02918331 n=7
Multiple Myeloma
Interventions: Daratumumab (16 mg/kg), Lenalidomide, Dexamethasone
Sponsor: Janssen Pharmaceutical K.K. | Started: 2016-09

Linked Hypotheses (0)

No linked hypotheses

Linked Experiments (0)

No linked experiments

Scoring Dimensions

Portfolio 0.66 (25%) Druggability 0.61 (20%) Evidence 0.62 (20%) Safety 0.50 (15%) Competitive 0.25 (10%) Connectivity 0.75 (10%) 0.645 composite

Knowledge Graph (20)

associated with (6)

CD38 neurodegeneration
CD38 P2RY1
CD38 P2RX5
CD38 PANX1
CD38 NAMPT
...and 1 more

co discussed (10)

CD38 C1Q
CD38 NAMPT
CD38 GPX4
CD38 PLA2G6
CD38 MMP2
...and 5 more

inhibits (1)

CD38 NAMPT

interacts with (1)

CD38 NAMPT

regulates (2)

CD38 NAMPT
CD38 SIRT1

Debate History (0)

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