Arb-Aroon Lertkhachonsuk

Prevalence of Tissue BRCA Gene Mutation in Ovarian, Fallopian Tube, and Primary Peritoneal Cancers: A Multi-Institutional Study

Ovarian, fallopian tube, or primary peritoneal cancer patients with BRCA gene mutation have enhanced sensitivity to platinum-based regimens and PARP inhibitors. However, the knowledge regarding BRCA mutation in Thai patients is limited. This study aimed at identifying the prevalence and characteristics of somatic and germline BRCA 1 and 2 mutations in Thai patients with these cancers. The paraffin blocks of tumors with histology of high grade serous, high grade endometrioid, or clear cell carcinoma obtained between June 2016 and December 2017 were analyzedto evaluate BRCA mutation using next-generation sequencing system. Blood or normal tissue paraffin blocks of positive patients were further tested for germline BRCA mutation. Tissue paraffin blocks of 178 patients were collected but only 139 were analyzed. Positive BRCA mutation was identified in 24 patients (17.3%): BRCA1 in 13 cases, BRCA2 in 10 cases, and BRCA1 and 2 in the rest one. Germline mutation study in blood or normal tissue in 23 positive patients revealed BRCA mutation in 14 cases, BRCA1 in 8 cases and BRCA 2  in 6 cases. Overall, the prevalence of somatic and germline mutation was 6.5% (9 out of 138 patients) and 8.7% (14 out of 138 patients), respectively. The most common histology associated with BRCA mutation was high grade serous cancer (27.3%). No significant difference was found between patients with or without BRCA mutation in terms of stage, outcome, platinum status, and survival outcome. BRCA mutation was demonstrated in less than 10% of Thai ovarian cancer patients. Higher rate of mutation was found in high grade serous cancer..

Practice guideline for management of endometrial cancer in Thailand: a Thai Gynecologic Cancer Society consensus statement

The Thai Gynecologic Cancer Society (TGCS) continues its efforts to elevate the standard of practice of gynecologic oncologists across all regions of Thailand. A key initiative involves collaborating with the Royal Thai College of Obstetricians and Gynaecologists and the National Cancer Institute, Thailand to regularly update and release clinical practice guidelines (CPGs) for gynecologic cancer. The TGCS released the first CPG for endometrial cancer (EMC) in 2011. Following significant advancements in disease understanding and the major revision of EMC staging by the International Federation of Gynecology and Obstetrics in 2023, national experts collaborated to update the guideline for EMC. The key components of the CPG for EMC covered screening, diagnostic indications and methods, primary treatment including surgical approaches and procedures, pathological processes, adjuvant therapies, and the management of recurrent and advanced diseases through medical or surgical means. The guideline was based on scientific evidence, recommendations from international organizations, and the unique healthcare context of Thailand. The final version reflects a consensus reached through extensive discussions among TGCS members. To share our work with international organizations and healthcare professionals, an English version of the CPG was developed. While it mirrors the content of the Thai version, it differs in length and level of detail. The English version additionally included the level of evidence and a recommendation summary for each section, reflecting common domestic practices, available resources, and coverage under health reimbursement systems.

European Society of Gynaecological Oncology resource-stratified guidelines for the management of patients with cervical cancer.

In 2023, the European Society of Gynaecological Oncology (ESGO), jointly with the European Society for Radiotherapy and Oncology (ESTRO) and the European Society of Pathology (ESP), published evidence-based guidelines for the management of patients with cervical cancer. Acknowledging that limitations exist even in high-income countries, some of these established standards of care are not applicable in clinical practice in some areas of the world. Following a global ESGO survey involving 256 clinicians from 57 countries, which pointed out potential limitations, barriers, and missing guidelines, ESGO decided to develop alternative management strategies for situations when optimal resources are unavailable or limited. A multi-disciplinary international development group consisting of 22 experts, utilizing feedback from the survey conducted mostly in low- and middle-income regions, identified potential limitations to the standards of care as defined in the updated ESGO-ESTRO-ESP guidelines published in 2023 and suggested alternative approaches. New resource-stratified guidelines on the management of women living with the human immunodeficiency virus have been newly proposed. To ensure a global perspective, the guidelines were reviewed by 188 independent international practitioners from Asia, Africa, Europe, and South, Central, and North America. These resource-stratified guidelines focus on achieving the best patient outcomes, with alternative management strategies based on expert opinions in areas with limited evidence. They should be used as a guide for the next best alternatives in multi-disciplinary care settings such as diagnostics, pathology, surgery, radiotherapy, systemic therapy, palliative care, and follow-up management. Efforts should always focus on providing optimal available care. In the absence of key resources, the primary effort should be directed toward consulting and referring patients to other facilities that provide better conditions.