eISSN: 1897-4309
ISSN: 1428-2526
Contemporary Oncology/Współczesna Onkologia
Current issue Archive Manuscripts accepted About the journal Supplements Addendum Special Issues Editorial board Abstracting and indexing Subscription Contact Instructions for authors Ethical standards and procedures
SCImago Journal & Country Rank
vol. 19
Original paper

The risk factors of toxicity during chemotherapy and radiotherapy in breast cancer patients according to the presence of BRCA gene mutation

Joanna Huszno
Magdalena Budryk
Zofia Kołosza
Elżbieta Nowara

Contemp Oncol (Pozn) 2015; 19 (1): 72–76
Online publish date: 2015/03/26
View full text
Get citation
JabRef, Mendeley
Papers, Reference Manager, RefWorks, Zotero
Aim of the study: Treatment toxicity may decrease the treatment effectiveness due to the need to reduce the dose or increase the interval between cycles. The aim of this study was to distinguish the risk factors for treatment side effects in breast cancer patients and to assess the impact of BRCA1/2 mutations on the treatment toxicity.

Material and methods: The analysis was conducted on the medical history of 370 patients who were treated with anthracycline-based chemotherapy between 2006 and 2012 in the Clinical Oncology Department, Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology in Gliwice in Poland (COI). All patients were tested for the presence of BRCA1 and BRCA2 mutations.

Results: In the studied group 13% (48) of the patients were BRCA mutation carriers. Neutropaenia after the first cycle of chemotherapy occurred more commonly in mutation carriers compared to non-carriers (29% vs. 10%), p = 0.0002. Radiotherapy acute skin toxicity was present in 3% of patients with similar rates in both groups, p = 0.950. Toxicity grade 3–4 was present more frequently in patients younger than 70 years (p = 0.02) of age, patients with viral hepatitis (p = 0.045), hypertension (p = 0.039), and cardiovascular disease (p = 0.044). Lower WBC count before treatment was observed more frequently in patients with neutropaenia (p = 0.002), especially in mutation carriers, p = 0.0015.

Conclusions: Risk factors for anthracycline-based chemotherapy side effects were: age below 70 years, lower WBC value at baseline, history of infectious diseases, hypertension, and cardiovascular comorbidity. The presence of BRCA mutations may be a risk factor for neutropaenia, but it did not affect radiotherapy toxicity.

BRCA1/2 mutation, breast cancer, chemotherapy, radiotherapy, side effects

Quick links
© 2021 Termedia Sp. z o.o. All rights reserved.
Developed by Bentus.
PayU - płatności internetowe