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. 2022 Oct 25;10(11):2700. doi: 10.3390/biomedicines10112700

Table 6.

Clinical trials targeting PDE4 in AD.

Target Molecule Clin Trial Gov Type of Study Status
PDE4
PDE4 inhibitor,
Crisaborole 2% topical small molecule
NCT04023084 Phase IV Completed
PDE4 inhibitor,
Crisaborole 2% topical small molecule
NCT04214197 Phase IV Active, not recruiting
PDE4 inhibitor,
Crisaborole 2% topical small molecule
NCT04800185 Early Phase I Active, not recruiting
PDE4 inhibitor,
Crisaborole 2% topical small molecule
NCT03233529 Phase II Completed
PDE4 inhibitor,
Roflumilast 0.15%
ARQ-151 Active topical small molecule
INTEGUMENT-I
NCT04773587 Phase III Recruiting
PDE4 inhibitor,
Roflumilast 0.15%
ARQ-151 Active topical small molecule
INTEGUMENT-II
NCT04773600 Phase III Recruiting
PDE4 inhibitor,
Roflumilast 0.05%
ARQ-151 Active topical small molecule
INTEGUMENT-PED
NCT04845620 Phase III Recruiting
PDE4 inhibitor,
Roflumilast 0.05–0.15%
ARQ-151 Active topical small molecule
INTEGUMENT-OLE
NCT04804605 Phase III Recruiting
PDE4 inhibitor,
Roflumilast 0.05%
topical small molecule
NCT01856764 Phase II Completed
PDE4 inhibitor,
Hemay808 1%/3%/7%
topical small molecule
NCT04352595 Phase II Unknown
PDE4 inhibitor,
GW842470X 3%
Topical small molecule
NCT00354510 Phase II Completed
PDE4 inhibitor,
GW842470X 3%
topical small molecule
NCT00356642 Phase I Completed
PDE4 inhibitor,
Apremilast 20 mg
oral small molecule
NCT00931242 Phase II Completed
PDE4 subtype with high PD4 affinity
PDE4 inhibitor,
Orismilast 20 mg, 30 mg, or 40 mg
oral small molecule
NCT05469464 Phase II Recruiting