https://doi.org/10.4081/jbr.2026.14951
Integrated clinicopathological and molecular profiling of papillary thyroid carcinoma identifies predominant BRAF and TERT promoter mutations: a cross-sectional study
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Published: 7 July 2026
Papillary Thyroid Carcinoma (PTC) exhibits diverse genetic alterations that influence tumor behavior and clinical outcomes. This study aimed to characterize the spectrum of somatic mutations in PTC using targeted Next-Generation Sequencing (NGS) and to evaluate their associations with clinicopathological, metabolic, and stress-related factors. A Prospective study was conducted on 45 patients newly diagnosed with PTC who underwent total thyroidectomy between December 2024 and February 2025. Formalin-Fixed, Paraffin-Embedded (FFPE) tumor tissues were analyzed using a targeted NGS panel encompassing 35 PTC-related genes. Bioinformatics analysis was performed using Genome Analysis Toolkit (GATK) and ANNOtate VARiation (ANNOVAR) for variant detection and annotation. Clinicopathological variables age, sex, Body Mass Index (BMI), tumor size, laterality, thyroid ultrasound findings, Thyroid Imaging Reporting and Data System (TI-RADS) level and stress exposure were statistically correlated with detected mutations using the chi-square test; a p < 0.05 value was considered as significant. All patients exhibited at least one genetic alteration, with 171 somatic mutations identified (average 3.8 per patient). The most frequent mutation was BRAF V600E (73.3%), followed by TERT promoter (28.9%), MET (24.4%), NRAS (22.2%), and DICER1 (20%). BRAF V600E mutations were significantly more common in tumors ≤ 1.2 cm (p = 0.037) and in right-lobe lesions (p = 0.049). RAS mutations correlated with smaller tumor size (p = 0.021), while TERT mutations were associated with stress exposure (p = 0.001). BRAF, RAS, and TERT mutations were also significantly more frequent among overweight and obese patients (p = 0.047, 0.046, and 0.040, respectively). Age-wise, BRAF and RAS mutations predominated in younger patients (≤ 40 years), whereas TERT mutations occurred unexpectedly more often in this group. BRAF V600E and TERT promoter mutations represent the dominant molecular events in PTC and demonstrate significant associations with tumor size, BMI, stress status, and patient age, suggesting that both metabolic and psychosocial factors may influence thyroid tumorigenesis.
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CRediT authorship contribution
Rawezh Qadir M. Salih was involved in the conception and design of the study, in the literature review and in the writing of the manuscript. Dlnya A. Mohammed was major contribution to the conception of the study, as well as to the literature search for related studies. Nizar M.T. Hamawandi was involved in the literature review, in the study design, in the critical revision of the manuscript and in the processing of the tables. All authors have read and approved the final manuscript.
Data Availability Statement
The datasets generated and/or analyzed during the current study are not publicly available because they form part of an ongoing master’s degree project and may be used in future publications. Data may be available from the corresponding author upon reasonable request and with permission of the Institution.
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