Genomic features of lung cancer patients in Indonesia's national cancer center.

INTRODUCTION: Advances in molecular biology bring advantages to lung cancer management. Moreover, high-throughput molecular tests are currently useful for revealing genetic variations among lung cancer patients. We investigated the genomics profile of the lung cancer patients at the National Cancer Centre of Indonesia. METHODS: A retrospective study enrolled 627 tissue biopsy samples using real time polymerase chain reaction (RT-PCR) and 80 circulating tumour DNA (ctDNA) liquid biopsy samples using next-generation sequencing (NGS) from lung cancer patients admitted to the Dharmais Cancer Hospital from January 2018 to December 2022. Data were obtained from medical records. Data statistically analysed with p < 0.05 is considered significant. RESULT: The EGFR test results revealed by RT-PCR were wild type (51.5%), single variant (38.8%), double variant (8.3%), and triple variant (1.4%), with 18.66% L85R, 18.22% Ex19del, and 11.08% L861Q variant. Liquid biopsy ctDNA using NGS showed only 2.5% EGFR wild type, 62.5% single variant and 35% co-variant, with EGFR/TP53 and EGFR/PIK3CA as the highest. CONCLUSION: EGFR variants are the most found in our centre. Liquid biopsy with ctDNA using NGS examination could detect broad variants and co-variants that will influence the treatment planning.

Renal cell carcinoma not otherwise specified: A case report in Indonesia.

Renal cell carcinoma not otherwise specified (RCC NOS) is a very rare type of kidney cancer which used for renal tumors that do not fit into any of the well-recognized subtypes. We reported a case of RCC NOS of a 64-year-old male presenting an enlarging left flank mass. Abdominal CT showed a left kidney mass infiltrating to the adrenal, with pulmonary metastases. Cytoreductive nephrectomy and lymphadenectomy were performed and diagnosis of RCC NOS was confirmed through histopatological and immunohistochemistry examination.