Clinical Trials

Multiple clinical trials, primarily sponsored by Piramal Enterprises Limited, have evaluated Riviciclib hydrochloride (P276-00) across Phase 1, Phase 1/2, and Phase 2 stages. These studies assessed the drug alone or in combination with radiotherapy or gemcitabine for various oncological conditions, including squamous cell carcinoma of the head and neck, pancreatic cancer, mantle cell lymphoma, melanoma, breast cancer, and relapsed or refractory multiple myeloma. While several trials achieved completed recruitment status, others were terminated or withdrawn prior to full completion.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT01903018 COMPLETED
Radiation Induced Mucositis in Head and Neck Cancer
Piramal Enterprises Limited
2012-07 PHASE2
NCT01333137 TERMINATED
Breast Cancer
Piramal Enterprises Limited
2011-08 PHASE1
NCT00835419 COMPLETED
Melanoma
Piramal Enterprises Limited
2009-05 PHASE2
NCT00824343 COMPLETED
Squamous Cell Carcinoma of Head and Neck
Piramal Enterprises Limited
2008-09 PHASE2
NCT00843050 TERMINATED
Mantle Cell Lymphoma
Piramal Enterprises Limited
2009-11 PHASE2
NCT00899054 COMPLETED
Squamous Cell Carcinoma of Head and Neck
Piramal Enterprises Limited
2009-08 PHASE1; PHASE2
NCT00898287 COMPLETED
Pancreatic Cancer
Piramal Enterprises Limited
2009-05 PHASE1; PHASE2
NCT00547404 WITHDRAWN
Multiple Myeloma
Piramal Enterprises Limited
2008-12 PHASE1
NCT00882063 COMPLETED
Relapsed and/or Refractory Multiple Myeloma
Piramal Enterprises Limited
2008-01 PHASE1; PHASE2
NCT00899054 Completed
Squamous Cell Carcinoma of Head and Neck
Piramal Enterprises Limited
2009-08 Phase 1|Phase 2
NCT00898287 Completed
Pancreatic Cancer
Piramal Enterprises Limited
2009-05 Phase 1|Phase 2
NCT00547404 Withdrawn
Multiple Myeloma
Piramal Enterprises Limited
2008-12 Phase 1
NCT00408018 TERMINATED
Neoplasm
Piramal Enterprises Limited
2006-03 PHASE1
NCT00407498 COMPLETED
Neoplasm
Piramal Enterprises Limited
2005-05 PHASE1
NCT00882063 Completed
Relapsed and/or Refractory Multiple Myeloma
Piramal Enterprises Limited
2008-01 Phase 1|Phase 2
NCT00407498 Completed
Neoplasm
Piramal Enterprises Limited
2005-05 Phase 1

(data from https://clinicaltrials.gov, updated on 2014-09-04)

Check the Riviciclib hydrochloride (P276-00) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Riviciclib hydrochloride potently inhibits cyclin-dependent kinases CDK1, CDK4, and CDK9 with IC50 values of 79 nM, 63 nM, and 20 nM, respectively, thereby disrupting cell cycle progression and transcriptional elongation in neoplastic cells. Suppression of these kinase pathways induces programmed cell death, providing the biological foundation for its clinical evaluation in advanced malignancies such as pancreatic cancer, mantle cell lymphoma, and relapsed multiple myeloma.

Appendix RUO and cGMP Quality Standards

Quality Dimension RUO (Research Use Only) cGMP (Current Good Manufacturing Practice)
Clinical Applicability Prohibited in human clinical trials or medical diagnostics. Mandatory for human clinical trials (Phase I–III) and therapies.
Regulatory Status Non-regulated grade; exempt from drug manufacturing laws. Legally enforced by health authorities (e.g., FDA, EMA, NMPA).
Facility Environment Unclassified analytical or research laboratories. Validated Cleanrooms (ISO Class 5–8) with continuous monitoring.
Quality Control Basic purity and activity testing. Rigorous safety release testing (Sterility, Endotoxin, Mycoplasma).
Process Validation Basic equipment calibration; no process validation required. Full qualification (IQ/OQ/PQ) and complete batch records.
Quality Assurance Vendor self-declared without required formal QMS. Mandatory QA/QC unit, Change Control, CAPA, and vendor audits.
Regulatory Impact High risk of IND rejection if used as a critical raw material. Required for IND/NDA filings, supported by Drug Master Files (DMF).

Footnotes

Regulatory Note: Governed by FDA (21 CFR Parts 210/211/312), EMA (EudraLex Vol 4), ICH Guidelines (E6/Q7/Q9/Q10), and compendial standards (USP <71>/<85>/<1043>).

Note: Technical data last updated: Sep 1, 2026.