Incidence of trastuzumab-induced cardiotoxicity and impact of body mass index in patients with breast cancer: Results from a Saudi tertiary cancer center.

The effect of BMI as a risk factor in trastuzumab-induced cardiotoxicity in Saudi patients with HER2-neu positive breast cancer treated with trastuzumab and anthracyclines is not fully understood. The present study retrospectively evaluated the overall incidence of cardiotoxicity and the effect of BMI as a risk factor for cardiotoxicity. A retrospective study performed between 2011 and 2015 of patients with Her2-neu positive early breast cancer who were treated with either a combination of trastuzumab and anthracycline or a combination of trastuzumab with non-anthracycline or hormonal treatment in the adjuvant settings was carried out.

Predictive and prognostic significance of CD8 tumor-infiltrating lymphocytes in patients with luminal B/HER 2 negative breast cancer treated with neoadjuvant chemotherapy.

The immunobiology of breast cancer (BC) subtypes, including luminal cancer, remains unclear. Cluster of differentiation (CD)8 tumor-infiltrating lymphocytes (TIL) are essential components of tumor-specific cellular adaptive immunity. However, only few studies have addressed the significance of cluster of differentiation 8(CD8) TIL in patients with luminal BC.

Screening for Lynch syndrome in young Saudi colorectal cancer patients using microsatellite instability testing and next generation sequencing.

Individuals with Lynch syndrome (LS) have germline variants in DNA mismatch repair (MMR) genes that confer a greatly increased risk of colorectal cancer (CRC), often at a young age. Identification of these individuals has been shown to increase their survival through improved surveillance. We previously identified 33 high risk cases for LS in the Saudi population by screening for microsatellite instability (MSI) in the tumor DNA of 284 young CRC patients.

Triple Negative Breast Cancer: A Tale of Two Decades.

Triple negative breast cancer (TNBC) is a heterogeneous disease entity constituting about 15% of breast cancer cases worldwide. TNBC is associated with poor prognosis and lack of sustained response to conventional chemotherapeutic agents. Tumoral heterogeneity and the presence of several subtypes of TNBC such as Basal like (BL)-1, BL-2, immune-modulatory, luminal androgen receptor, mesenchymal, and mesenchymal/stem like subtype and claudin low subtype, may explain some of the difficulties faced in managing this challenging disease subgroups.

Breast cancer characteristics in very young Egyptian women ≤35 years.

Background: Breast cancer in very young patients represents a unique issue that needs more attention as the number of cases is increasing and it has special characteristics at presentation, diagnosis, and biologic behaviors which reflect on both treatment strategies and survival. The aim of the current study was to analyze and report the clinico-pathological characteristics and treatment procedures used for breast cancer in very young patients over the last decade in a single Egyptian cancer center.

Patients And Methods: A retrospective study was conducted in the Oncology Center - Mansoura University, where the data of all breast cancer patients, between September 2006 and August 2015, were reviewed.

Predictive Value of IHC4 Score for Pathological Response to Neoadjuvant Chemotherapy in Hormone Receptor-Positive Breast Cancer.

Purpose: This study aimed to explore the value of IHC4 in predicting pathological response after neoadjuvant chemotherapy in patients with hormonal receptor (HR)-positive breast cancer (BC).

Materials And Methods: In this retrospective exploratory study, data for 68 HR-positive BC patients who received neoadjuvant chemotherapy were recorded. IHC4 scores were calculated based on estrogen receptors/progesterone receptors, Ki-67 and HER2 status.

Thyroid transcription factor-1 expression in advanced non- small cell lung cancer: impact on survival outcome.

Background: The prognostic role of thyroid transcription factor-1 (TTF-1) expression in lung cancer has been assessed but with inconsistent results. The present study aimed to evaluate the prognostic value of TTF1 expression in advanced non-squamous non-small cell lung cancer (NSCLC).

Materials And Methods: In this retrospective study, patients with stage IIIB-IV non-squamous NSCLC were enrolled.

Methylation of SFRPs and APC genes in ovarian cancer infected with high risk human papillomavirus.

Background: Secreted frizzled-related protein (SFRP) genes, new tumor suppressor genes, are negative regulators of the Wnt pathway whose alteration is associated with various tumors. In ovarian cancer, SFRPs genes promoter methylation can lead to gene inactivation. This study investigated mechanisms of SFRP and adenomatous polyposis coli (APC) genes silencing in ovarian cancer infected with high risk human papillomavirus.

Human papillomavirus genotyping and integration in ovarian cancer Saudi patients.

Background: Human papillomavirus (HPV) is associated with different malignancies but its role in the pathogenesis of ovarian cancer is controversial. This study investigated the prevalence, genotyping and physical state of HPV in ovarian cancer Saudi patients.

Methods: Hundred formalin fixed paraffin embedded (FFPE) ovarian carcinoma tissues and their normal adjacent tissues (NAT) were included in the study.