Atlas One · Host Biology · Scale 03 — Molecular

Cyclin D1

Cell cycle G1/S accelerator; Wnt/RAS-MAPK/oncogene signaling → cyclin D1-CDK4/6 → Rb phosphorylation → E2F-S phase entry. Amplified in breast, HNSCC, and bladder cancers; cyclin D1-CDK4/6 complex is the direct molecular target of palbociclib, ribociclib, and abemaciclib.

Also known as: CCND1, cyclin D1, BCL1, PRAD1, D11S287E, PCNA-associated protein

Scale 03 — MolecularScale
draftStatus
2026-06-06Last Reviewed
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cyclin-d1

Cyclin D1

Cell cycle G1/S accelerator; Wnt/RAS-MAPK/oncogene signaling → cyclin D1-CDK4/6 → Rb phosphorylation → E2F-S phase entry. Amplified in breast, HNSCC, and bladder cancers; cyclin D1-CDK4/6 complex is the direct molecular target of palbociclib, ribociclib, and abemaciclib.