Background: Ribociclib, palbociclib and abemaciclib are currently approved CDK4/6 inhibitors along with aromatase inhibitors as the first-line standard-of-care for patients with hormone receptor-positive, HER2-negative metastatic breast cancer. Methods: The authors report retrospective real-life data for 600 patients with estrogen receptor- and/or progesterone receptor-positive and HER2-negative metastatic breast cancer who were treated with ribociclib and palbociclib in combination with letrozole. Results & conclusion: The results demonstrated that the combination of palbociclib or ribociclib with letrozole has similar progression-free survival and overall survival benefit in real life for the patient group with similar clinical features. Specifically, endocrine sensitivity may be a factor to be considered in the treatment preference.
Introduction: Breast cancer consists huge amount of the cancerrelated death in population. Ovarian cancer is the second most frequent seen type of gynecological cancer and has the highest mortality among gynecological cancers since most cases are detected late. The current study intended to determine the prevalence of oncogene mutations, especially BRCA1 and BRCA2, in high-risk patients diagnosed with ovarian and breast cancer in the Black Sea region of our country. Material and method: Between August 2017 and January 2022, a total of 223 individuals who applied to our center and met the genetic test criteria were included in the study. Next-generation sequencing (NGS) was used to detect germ-line deleterious variants in genes included in the oncogenetic panel of patients (34 genes). Results: Among the 223 patients analyzed within the scope of the study, 195 had breast cancer, and 28 had ovarian cancer, resulting in the detection of 15 different pathogenic variants of BRCA1 (%4,9) and BRCA2 (%6,7) genes in 26 (11.6%) patients. In the analysis of 32 oncogenes other than BRCA1 and BRCA2 genes, 26 different pathogenic (P) or likely pathogenic (LP) variants were detected in a total of 35 patients (15.7%). Based on the analysis of 223 breast/ ovarian cancer patients together, 41 different pathogenic (P) or likely pathogenic (LP) variants were found in 61 patients (27.3%). Furthermore, 65 different VUSs (Variant of Uncertain Significance) were detected in 73 patients (32.7%). Conclusion: This is the first study to be conducted in our region in a single center located in the Black Sea region. The study was conducted in a single center within the Black Sea region and, to our knowledge, provides the first data in this region in terms of cancer genes other than BRCAs. To appreciate of the genetic susceptibility spectrum of hereditary breast and/or ovarian cancer better, it is imperative to clarify the risks associated with genes other than BRCAs, which carry a high risk for other breast and ovarian cancers, as well as BRCA1 and BRCA2. Therefore, patients in the risk group must undergo multigene panel testing in addition to routine BRCA1 and BRCA2 gene testing. We detected two novel variants in the BRCA2 gene and five novel variants other than BRCA oncogenes. Furthermore, the results of this study contributed to the development of our country's specific variant pool.
Objective: Published studies on male breast cancer (MBC) and BRCA mutations are scarce and usually include, a small number of patients. The clinicopathological characteristics of BRCA mutant and wild-type MBC patients were compared in more than forty patients in this study. Materials and Methods:A retrospective review of MBC patients' clinical and histopathological data was conducted. To compare the patients' characteristics, chi-square test and Fisher's Exact test were utilized. Kaplan-Meier analysis was used to examine the survival analysis. Results:In total 43 cases were reviewed. The average duration of follow-up was 35.8 months. BRCA mutations were found in 11 (25.6%) of the patients. BRCA1 mutations were found in four patients (9.3%), BRCA2 mutations in six patients (14%), and BRCA1 and BRCA2 mutations in one patient (2.3%). The median age at diagnosis was 58 years old, and there was no statistically significant difference between groups (p = 0.7). Tumor location (p = 0.3), human epidermal growth factor receptor 2 overexpression (p = 0.5), estrogen receptor status (p = 0.05), progesterone receptor status (p = 0.6), tumor stage (p = 0.9), lymph node positivity (p = 0.5), tumor histology (p = 0.06), and recurrence status (p = 0.6) were similar between BRCA-wild type and -mutated patients. Overall survival averaged 115.6 months (range: 76.0-155.3), with no statistically significant differences between groups (p = 0.6). Conclusion:This study investigated clinical and pathological characteristics and prognoses of BRCA wild and mutant-type MBC and these were similar in all groups studied.
Aim: The COVID-19 pandemic has caused delays in breast cancer screening and diagnostic procedures. The aim of this research was to compare the status of breast cancer screenings and newly diagnosed breast cancer cases during the pandemic compared to the pre-pandemic period. Material and method: This retrospective study included patients with screening mammography, imaging-guided biopsies, and newly diagnosed breast cancer from March 2020– February 2021 (during-COVID-19) were compared with March 2019–February 2020 (pre-COVID-19). We compared numbers and distribution over time of mammography and biopsies between the time periods. In the breast cancer group; the stage at diagnosis and histopathological features of the tumor were also compared. Results: Compared to pre-pandemic mammography scans, a 44% decrease was observed in total during pandemic, the most significant being in April (-98%) and May (-93%). While there was a significant decrease in the number of biopsies in April (-100%) and May (-69%), it was seen that there was no decrease in the pandemic period when the whole year was looked at with a rebound increase that started with 29% in June. In the breast cancer group, there was a significant increase in the number of patients who were metastatic at the time of diagnosis compared to the pre-pandemic period (p=0.001). No significant difference was observed between the two groups in terms of tumor grade, hormone receptor status, or HER2 positivity (p>0.05). Conclusions: In this study, it was observed that both screening and diagnosis processes in breast cancer were significantly affected during the COVID-19 pandemic. It was observed that the delay in admission to the hospital in the first months of the pandemic resulted in an increase in patients who were metastatic at the time of diagnosis.
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