ArticleCancer research communications2024
Beyond HRD Status: Unraveling Genetic Variants Impacting PARP Inhibitor Sensitivity in Advanced Ovarian Cancer.
Article in Cancer research communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02354131 (Part 1), which is not on this map. Cited by 4 papers.
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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.
Part 1: AVANOVA1 - A Phase I Study to Evaluate the Safety and Tolerability of Bevacizumab-niraparib Combination Therapy and Determine the Recommended Phase 2 Dose (RP2D) in Women With Platinum-sensitive Epithelial Ovarian, Fallopian Tube, or Peritoneal Cancer Part 2: AVANOVA2 - A Two-arm, Open-label, Phase II Randomized Study to Evaluate the Efficacy of Niraparib Versus Niraparib-bevacizumab Combination in Women With Platinum-sensitive Epithelial Ovarian, Fallopian Tube, or Peritoneal Cancer.
Who cites it
4 citing papers in PubMed.
- Antitumor activity and structure-activity relationship of poly (ADP-ribose) polymerase (PARP)-based dual inhibitors.Journal of enzyme inhibition and medicinal chemistry · 2026Review
- Exploring survival-associated transcriptomic subtypes in ovarian cancer using RNAseq from FFPE tissues in a clinical trial cohort.Translational oncology · 2026Article
- Clinical application of PARP inhibitors and emerging strategies to overcome resistance: a pan-cancer perspective.Biomarker research · 2026Review
- PARP inhibitor maintenance in first-line ovarian cancer therapy: emerging standards and strategies to overcome resistance.American journal of cancer research · 2026Review
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Authors and funding
22 authors.
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No grant is acknowledged in the PubMed record.
Abstract
abstractThe management of advanced epithelial ovarian cancer (AOC) has undergone significant advancements with the emergence of molecular diagnostics, particularly in predicting responses to PARP inhibitors (PARPi) based on homologous recombination deficiency (HRD) status. However, understanding sensitivity and resistance beyond HRD status remains elusive. This study aims to explore molecular factors that may elucidate why HRD status does not consistently predict PARPi sensitivity. Therefore, we conducted a post hoc translational analysis of formalin-fixed paraffin-embedded tumor samples from the ENGOT-ov24/NSGO-AVANOVA part 1 and 2 trial (NCT02354131), focusing on alterations pertaining radiologic response and progression-free survival (PFS). DNA sequencing was performed using the TruSight Oncology 500 HT gene panel, with variants classified according to recent guidelines. HRD status had been assessed by Myriad MyChoice CDx. We identified, among 92 patients in the ENGOT-ov24/NSGO-AVANOVA part 1 and 2 trial, 151 pathogenic or likely pathogenic variants across 81 samples. PARPi-sensitizing variants were found in two out of 10 HRD-negative samples from patients with clinical benefit (PFS ≥12 months), whereas three out of 10 HRD-positive samples from patients having no benefit (PFS ≤6 months) harbored variants associated with PARPi resistance. Additionally, analysis of BRCA1 variants revealed that truncating variants in exon 11 correlated with clinical benefit when niraparib was combined with bevacizumab. Conclusively, our findings highlight the complexity of PARPi response in AOC and underscore the importance of exploring somatic variants beyond HRD status. Further investigation into exon 11 variants of BRCA1 and the potential of combination treatment is warranted. SIGNIFICANCE: The irregular response to PARPi in HRD-positive and -negative tumors highlights the need for identifying additional biomarkers. This study explores the mutational landscape beyond HRD status in AOC, ultimately advancing precision oncology in future clinical practice.
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