ArticleClinical cancer research : an official journal of the American Association for Cancer Research2011
Expression of p16 and retinoblastoma determines response to CDK4/6 inhibition in ovarian cancer.
Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 187 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
187 citing papers in PubMed, 1 synthesis or guideline pooled it, 297 citations in OpenAlex.
- Prognostic significance of several biomarkers in epithelial ovarian cancer: a meta-analysis of published studies.Journal of cancer research and clinical oncology · 2013Pooled it
- The PALBONET Trial: A Phase II Study of Palbociclib in Metastatic Grade 1 and 2 Pancreatic Neuroendocrine Tumors (GETNE-1407).The oncologist · 2020Trial
- The National Lung Matrix Trial: translating the biology of stratification in advanced non-small-cell lung cancer.Annals of oncology : official journal of the European Society for Medical Oncology · 2015Trial
- MKRN2-Mediated Degradation of IGF2BP3 Suppresses MYC and Enhances CDK4/6 Inhibitor Sensitivity in Bladder Cancer.Cancers · 2026Article
- The evolving landscape of CDK inhibitor use in breast cancer therapy and beyond.Nature reviews. Drug discovery · 2026Review
- Molecular and Cell Biological Characterization of Patient-Derived Head and Neck Squamous Carcinoma Cell Lines.Cancer science · 2026Article
- Cell-cycle targeted cancer therapy: clinical advances, biological gaps, and the emergence of selective CDK4 inhibitors.Journal of hematology & oncology · 2026Review
- CCND1 Stability Regulated by USP7 Deubiquitination Controls Glioma Radioresistance via Ferroptosis.Analytical cellular pathology (Amsterdam) · 2026Article
- Comprehensive investigation of the molecular basis of cancer dependencies suggests therapeutic options for breast cancer.Cancer biology & medicine · 2025Article
- Synthesis and biological evaluation of novel carnosic acid derivatives with anticancer activity.RSC advances · 2025Article
- Efficacy of CDK4/6 Inhibition in colorectal cancer and the role of p16 expression in predicting drug resistance.Cellular oncology (Dordrecht, Netherlands) · 2025Article
- Targeting CDKs in cancer therapy: advances in PROTACs and molecular glues.NPJ precision oncology · 2025Review
- Review
- Phase I study of ribociclib (CDK4/6 inhibitor) with spartalizumab (PD-1 inhibitor) with and without fulvestrant in metastatic hormone receptor-positive breast cancer or advanced ovarian cancer.Journal for immunotherapy of cancer · 2025Article
- Review
- TRIM4 modulates the ubiquitin-mediated degradation of hnRNPDL and weakens sensitivity to CDK4/6 inhibitor in ovarian cancer.Frontiers of medicine · 2025Article
- Cyclin-dependent protein kinases and cell cycle regulation in biology and disease.Signal transduction and targeted therapy · 2025Review
- CDK4 inactivation inhibits apoptosis via mitochondria-ER contact remodeling in triple-negative breast cancer.Nature communications · 2025Article
- p16 Immunohistochemical Patterns in Triple-Negative Breast Cancer: Clinical and Genomic Similarities of the p16 Diffuse Pattern to pRB Deficiency.Pathobiology : journal of immunopathology, molecular and cellular biology · 2025Article
- Premature renal epithelial cell senescence promoted by LXN/Rps3/p53 signaling pathway activation increases calcium oxalate crystal deposition by altering macrophage polarization.Frontiers in immunology · 2025Article
127 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
21 authors at 5 institutions in 1 country.
Funding
Abstract
purposePD-0332991 is a selective inhibitor of the CDK4/6 kinases with the ability to block retinoblastoma (Rb) phosphorylation in the low nanomolar range. Here we investigate the role of CDK4/6 inhibition in human ovarian cancer. EXPERIMENTAL
designWe examined the effects of PD-0332991 on proliferation, cell-cycle, apoptosis, and Rb phosphorylation using a panel of 40 established human ovarian cancer cell lines. Molecular markers for response prediction, including p16 and Rb, were studied using gene expression profiling, Western blot, and array CGH. Multiple drug effect analysis was used to study interactions with chemotherapeutic drugs. Expression of p16 and Rb was studied using immunohistochemistry in a large clinical cohort of ovarian cancer patients.
resultsConcentration-dependent antiproliferative effects of PD-0332991 were seen in all ovarian cancer cell lines, but varied significantly between individual lines. Rb-proficient cell lines with low p16 expression were most responsive to CDK4/6 inhibition. Copy number variations of CDKN2A, RB, CCNE1, and CCND1 were associated with response to PD-0332991. CDK4/6 inhibition induced G0/G1 cell cycle arrest, blocked Rb phosphorylation in a concentration-and time-dependent manner, and enhanced the effects of chemotherapy. Rb-proficiency with low p16 expression was seen in 97/262 (37%) of ovarian cancer patients and was independently associated with poor progression-free survival (adjusted relative risk 1.49, 95% CI 1.00-2.24, P = 0.052).
conclusionsPD-0332991 shows promising biologic activity in ovarian cancer cell lines. Assessment of Rb and p16 expression may help select patients most likely to benefit from CDK4/6 inhibition in ovarian cancer.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.