Long noncoding RNA MALAT1 polymorphism predicts MACCEs in patients with myocardial infarction

Area of Science:

• Genetics and Molecular Biology
• Cardiovascular Medicine
• Oncology (Transcriptomics)

Background:

• Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is implicated in cardiovascular and cerebrovascular diseases.
• Previous research linked MALAT1 gene polymorphisms to cardiac and cerebrovascular diseases.
• The prognostic significance of MALAT1 polymorphisms in major adverse cardiac and cerebrovascular events (MACCEs) was previously undetermined.

Purpose of the Study:

• To investigate the association between the MALAT1 rs3200401 polymorphism and the occurrence of MACCEs.
• To determine if MALAT1 rs3200401 genotype influences prognosis in myocardial infarction (MI) patients.

Main Methods:

• A case-control study involving 617 MI patients and 1125 controls.
• Genotyping of the MALAT1 rs3200401 polymorphism using SNPscan™ assays.
• Follow-up assessments to record MACCEs, analyzed with Kaplan-Meier curves and Cox survival analyses.

Main Results:

• The T allele and CT+TT genotypes of MALAT1 rs3200401 were significantly more frequent in participants and MI patients who experienced MACCEs.
• Kaplan-Meier analysis revealed a higher MACCE incidence in subjects with CT+TT genotypes compared to CC genotype carriers among total participants and MI patients.
• Multivariate Cox regression identified CT+TT genotypes as a risk factor for MACCEs, increasing risk by 1.554-fold (HR: 1.554, 95% CI: 1.060-2.277, P=0.024).

Conclusions:

• The MALAT1 rs3200401 CT+TT genotypes are identified as a risk factor for MACCEs in myocardial infarction patients.
• The MALAT1 gene holds potential as a biomarker for predicting poor prognosis in MI patients.