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Poster lunch

1589 - Hematological toxicities following treatment of cancer patients with PARP inhibitors (565P)


18 Nov 2017


Poster lunch


Shaimaa Essam-Eldin


Annals of Oncology (2017) 28 (suppl_10): x177-x182. 10.1093/annonc/mdx668


S. Essam-Eldin1, E. Salah2, H. Ahmed3, H. Elhalawani3, O. Abdel-Rahman2

Author affiliations

  • 1 Clinical Oncology Department, Ain shams university hospitals, 2205 - Cairo/EG
  • 2 Clinical Oncology Department, Ain Shams University Faculty of Medicine, 11566 - Cairo/EG
  • 3 Cancer Centre, MD Anderson, 73344 - Texas/US


Abstract 1589


A meta-analysis of the risk of hematological adverse events (AEs) associated with the use of PARP inhibitors in patients treated from cancer has been conducted.


Eligible publications included phase II and III randomized trials of patients treated from cancer with PARP inhibitors, describing events of all-grade and high-grade hematological toxicity which include (anemia, thrombocytopenia, neutropenia, and lymphopenia).


Our search strategy yielded 143 potentially eligible citations from pubmed/MEDLINE, google scholar, clinical trials.gov, ASCO and ESMO meetings library. Ineligible studies were excluded, and a total of 15 RCTs were involved in this analysis, 13 of them were phase 2 trials and only two were phase 3 trials, with a total of 3019 patients. The relative risk was 1.40 [95% confidence interval (CI): 1.26-1.55; p 


Our analysis provided evidence that the use of PARP inhibitors is associated with an increased risk of all-grade and high-grade anemia, thrombocytopenia, neutropenia and lymphopenia compared with chemotherapy or placebo controls.

Clinical trial identification

Legal entity responsible for the study

Omar Abdel-Rahman




All authors have declared no conflicts of interest.

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