ArticleOncogene2020
Combined PARP and ATR inhibition potentiates genome instability and cell death in ATM-deficient cancer cells.
Article in Oncogene, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 124 papers.
What it found
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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.
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Who cites it
124 citing papers in PubMed, 182 citations in OpenAlex.
- Ceralasertib Monotherapy in Patients with ATM-Altered Advanced Solid Tumors or Metastatic Castration-Resistant Prostate Cancer: Data from the Phase IIa PLANETTE Study.Cancer research communications · 2026Trial
- Novel Combinations of Immunotherapies or DNA Damage Repair Inhibitors in Platinum-Refractory Extensive-Stage Small Cell Lung Cancer: The Phase II BALTIC Study.Clinical cancer research : an official journal of the American Association for Cancer Research · 2024Trial
- Olaparib and Ceralasertib (AZD6738) in Patients with Triple-Negative Advanced Breast Cancer: Results from Cohort E of the plasmaMATCH Trial (CRUK/15/010).Clinical cancer research : an official journal of the American Association for Cancer Research · 2023Trial
- PROTACs in cancer therapy: targeted degradation of GPX4, PARP and epigenetic regulators.Journal of enzyme inhibition and medicinal chemistry · 2026Review
- Ataxia-Telangiectasia, DNA Repair Deficits, Immune Dysfunction, and Cancer: A Review of Mechanisms, Clinical Presentations, and Emerging Therapies.Clinical reviews in allergy & immunology · 2026Review
- Safety and efficacy of ceralasertib, an ATR kinase inhibitor, combined with olaparib: dose escalation in advanced solid tumours and dose expansion in advanced breast cancer.British journal of cancer · 2026Article
- Targeting the DNA-repair chromatin-modifier protein SMYD3 as a novel epigenetics-based therapy for gastric cancer.Journal of experimental & clinical cancer research : CR · 2026Article
- Ataxia telangiectasia mutated (ATM) kinase as a predictive biomarker in clinical oncology: implications for a precision treatment approach.Neoplasia (New York, N.Y.) · 2026Review
- Fundamentals and emerging frontiers in p53-targeted drug development.Biochemistry and biophysics reports · 2026Review
- Phase 1 study of ceralasertib, an ATR kinase inhibitor, in combination with durvalumab in patients with recurrent or metastatic NSCLC or HNSCC.British journal of cancer · 2026Article
- Targeting RNase H2: A dual-mechanism strategy to elevate replication stress, DNA damage, and antitumor immunity in TNBC.Cell reports. Medicine · 2026Article
- Defective DNA Damage Response Is a Targetable Therapeutic Vulnerability in ESR1-Mutant Breast Cancer.Cancer research · 2026Article
- Elimusertib enhances cytotoxic effects of conventional chemotherapy and sensitizes to radiation in preclinical Ewing sarcoma models.Scientific reports · 2026Article
- Pathway for the Development of ATR Inhibitors in Pediatric Malignancies: An ACCELERATE Multistakeholder Analysis.JCO precision oncology · 2026Review
- An open-source screening platform accelerates discovery of drug combinations.Nature communications · 2025Article
- Targeting ATR offers multifaceted treatment strategies involving RAD51-mediated compensatory DNA repair in bladder cancer.Journal of experimental & clinical cancer research : CR · 2025Article
- PARP Activity Is Essential for Retinal Photoreceptor Survival in the Human Homologous RhoJournal of neurochemistry · 2025Article
- High PARP1 expression is associated with proliferative tumor biology in breast cancer.Breast cancer research and treatment · 2025Article
- Review
- Emerging Therapeutic Approaches to Pancreatic Adenocarcinoma: Advances and Future Directions.Current treatment options in oncology · 2025Review
64 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
13 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The poly (ADP-ribose) polymerase (PARP) inhibitor olaparib is FDA approved for the treatment of BRCA-mutated breast, ovarian and pancreatic cancers. Olaparib inhibits PARP1/2 enzymatic activity and traps PARP1 on DNA at single-strand breaks, leading to replication-induced DNA damage that requires BRCA1/2-dependent homologous recombination repair. Moreover, DNA damage response pathways mediated by the ataxia-telangiectasia mutated (ATM) and ataxia-telangiectasia mutated and Rad3-related (ATR) kinases are hypothesised to be important survival pathways in response to PARP-inhibitor treatment. Here, we show that olaparib combines synergistically with the ATR-inhibitor AZD6738 (ceralasertib), in vitro, leading to selective cell death in ATM-deficient cells. We observe that 24 h olaparib treatment causes cells to accumulate in G2-M of the cell cycle, however, co-administration with AZD6738 releases the olaparib-treated cells from G2 arrest. Selectively in ATM-knockout cells, we show that combined olaparib/AZD6738 treatment induces more chromosomal aberrations and achieves this at lower concentrations and earlier treatment time-points than either monotherapy. Furthermore, single-agent olaparib efficacy in vitro requires PARP inhibition throughout multiple rounds of replication. Here, we demonstrate in several ATM-deficient cell lines that the olaparib and AZD6738 combination induces cell death within 1-2 cell divisions, suggesting that combined treatment could circumvent the need for prolonged drug exposure. Finally, we demonstrate in vivo combination activity of olaparib and AZD6738 in xenograft and PDX mouse models with complete ATM loss. Collectively, these data provide a mechanistic understanding of combined PARP and ATR inhibition in ATM-deficient models, and support the clinical development of AZD6738 in combination with olaparib.
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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.