HFE mutations and transferrin C1/C2 polymorphism among Croatian patients with schizophrenia and schizoaffective...

Area of Science:

• Genetics
• Psychiatry
• Medical Research

Background:

• Genetic factors are increasingly implicated in the etiology of psychiatric disorders.
• Hemochromatosis gene (HFE) mutations and transferrin (TF) gene variants are being investigated for their potential roles in various diseases.
• Schizophrenia and schizoaffective disorder have complex genetic underpinnings.

Purpose of the Study:

• To investigate the association between HFE gene mutations (C282Y and H63D) and the TF-C2 variant with susceptibility to schizophrenia and schizoaffective disorder.
• To examine the potential influence of these genetic variants on the age at first hospital admission for these disorders.

Main Methods:

• Genotyping of 176 Croatian patients with schizophrenia/schizoaffective disorder and 171 healthy controls using Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP).
• Statistical analysis of allele and genotype frequencies.
• Assessment of age at first hospital admission using non-parametric tests (Mann-Whitney U, Kruskal-Wallis) and multiple regression analysis.

Main Results:

• The H63D mutation showed borderline statistical significance in allele and genotype frequencies between patient and control groups.
• No other significant differences in allele or genotype distributions were observed for the investigated HFE mutations and TF-C2 variant.
• Analysis of age at first hospital admission revealed no significant impact of the studied genetic variants.

Conclusions:

• The investigated HFE mutations (C282Y, H63D) and the TF-C2 variant are not identified as high-risk genetic factors for schizophrenia or schizoaffective disorder in the studied Croatian population.
• These genetic variants do not appear to influence the age of onset for the first psychotic symptoms in these disorders.