In a preliminary case–control study conducted in a Pakistani population, researchers have identified three missense genetic variants within the Kruppel-like factor 15 (KLF15) gene that correlate with susceptibility to hepatocellular carcinoma. Published in BMC Gastroenterology, the study represents the first genetic association investigation to examine missense single nucleotide polymorphisms of KLF15 in primary liver cancer. The investigators evaluated three candidate variants—rs755719419 C > G, rs999426548 A > G, and rs768676875 G > A—and observed that each variant was significantly associated with an elevated risk of hepatocellular carcinoma across multiple genetic inheritance models.
Hepatocellular carcinoma is recognized as one of the most lethal malignancies worldwide, developing through an intricate, multifactorial biological process driven by genetic, epigenetic, and environmental factors. Within hepatic tissue, Kruppel-like factor 15 possesses an established physiological role in regulating liver metabolism and cellular differentiation. In recent years, researchers have also implicated KLF15 in oncogenic and cancer-related cellular pathways. Building upon its recognized function in hepatic metabolic processes and emerging ties to malignancy, the investigation sought to directly determine whether specific single nucleotide polymorphisms within KLF15 influence individual susceptibility to hepatocellular carcinoma development.
The research began with a multi-step analytical strategy that combined computational prediction with laboratory testing. The authors first applied various in silico bioinformatics tools to filter the gene and identify high-risk missense genetic variants in KLF15 for targeted investigation. Following this computational screening, the authors assembled a clinical cohort comprising 200 participants from a Pakistani population. The study cohort was divided evenly into 100 patients diagnosed with hepatocellular carcinoma and 100 healthy control subjects, establishing a balanced preliminary case–control structure.
To verify the genetic stability of the control population prior to genotypic testing, the research team tested the cohort for Hardy-Weinberg equilibrium. Following these baseline checks, the computational predictions were experimentally validated in the laboratory using mutation-specific Tetra ARMS PCR to genotype all 200 participants for the selected KLF15 missense polymorphisms. The resulting laboratory data confirmed that all three selected KLF15 variants conformed to Hardy-Weinberg equilibrium, confirming stability across the examined genetic loci and supporting the validity of subsequent association analyses.
To evaluate how the identified variants correlate with cancer risk, the investigators carried out comprehensive statistical comparisons using Fisher’s exact test. The team analyzed genetic associations with hepatocellular carcinoma susceptibility as well as patient clinicopathological features across six separate genetic inheritance models. Across the 100 cancer cases and 100 control subjects, the statistical evaluation demonstrated that each of the three examined missense variants exhibited significant associations with disease susceptibility across several of the evaluated genetic inheritance models.
Among the evaluated polymorphisms, rs755719419 C > G demonstrated the strongest disease association with hepatocellular carcinoma risk in the study cohort. This variant attained statistical significance across all six genetic inheritance models evaluated by the research team. The second variant, rs999426548 A > G, also exhibited a statistically significant association with increased risk of hepatocellular carcinoma, correlating with disease susceptibility under five distinct models: the codominant, dominant, recessive, allelic, and additive inheritance models.
The third variant, rs768676875 G > A, showed a similar correlation with heightened cancer risk, demonstrating significant associations under the codominant, dominant, recessive, allelic, and additive genetic models. When assessing clinicopathological features, the investigators discovered that rs768676875 G > A was also significantly associated with fatty liver, directly linking this polymorphism to hepatic steatosis. By comparison, neither rs755719419 nor rs999426548 showed any statistically significant association with clinicopathological features. The investigators concluded that rs755719419 C > G, rs999426548 A > G, and rs768676875 G > A function as susceptibility variants in the Pakistani population, providing preliminary evidence that links KLF15 missense variants to hepatocellular carcinoma.
Subject of Research: Genetic association of KLF15 missense variants with hepatocellular carcinoma risk
Article Title: KLF15 missense variants and hepatocellular carcinoma susceptibility: a preliminary case–control study in a Pakistani population
Article References: Arshad, R., Badshah, Y., Shabbir, M., Mustafa, A., burki, A., Bibi, H., Trembley, J. H., Afsar, T., Almajwal, A., & Razak, S. (2026). KLF15 missense variants and hepatocellular carcinoma susceptibility: a preliminary case–control study in a Pakistani population. BMC Gastroenterology. https://doi.org/10.1186/s12876-026-05517-7
Image Credits: AI Generated
DOI: 10.1186/s12876-026-05517-7
Keywords: KLF15, hepatocellular carcinoma, liver cancer, missense variants, single nucleotide polymorphisms, rs755719419, rs999426548, rs768676875, Tetra ARMS PCR, Hardy-Weinberg equilibrium, case-control study, genetic inheritance models, hepatic steatosis, fatty liver, in silico tools, Pakistani population, Fisher exact test, hepatic metabolism
