Human RRMS Patients' Mitochondrial DNA Analysis
In a study of 100 patients with relapsing-remitting multiple sclerosis (RRMS), whole mitochondrial DNA (mtDNA) was sequenced. No pathogenic mtDNA variants or significant associations with MS risk or progression were found. However, exploratory analyses suggested nominal links between some mtDNA variants and RRMS characteristics such as relapse occurrence and disability level.
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Why it matters
This research is important as it explores the potential role of mitochondrial DNA in MS, contributing to our understanding of disease mechanisms. However, findings regarding individual mtDNA variants need further investigation to confirm their relevance.
What this does not prove
The study found no significant role of mtDNA variants in RRMS. The preliminary associations noted are exploratory and require validation in larger, independent cohorts before any conclusions can be drawn about their significance.
Next milestone
No next milestone was established from the available source.
Study facts
- Study design
- Not reported
- Participants / samples
- 100 · Number of RRMS patients sequenced
- Randomised
- Not reported
- Controlled
- Not reported
- Primary endpoint met
- No
- Relevant MS type
- RRMS
- Publication date
- 2026-10-05
- Evidence reviewed
- Abstract only
- Regulatory approval
- Not reported
- Research areas
- Other
Original sources
- Primary evidenceGenetic insights into multiple sclerosis: exploring mitochondrial DNA and nuclear POLG gene variation in a Polish single-center RRMS cohort. ↗DOI: 10.5603/pjnns.113007
Supporting passages (10)
subjectsMATERIAL AND METHODS: Whole mtDNA was sequenced in 100 RRMS patients using next-generation sequencing and compared with previously generated mtDNA data from 212 Polish individuals without MS.
sample sizeMATERIAL AND METHODS: Whole mtDNA was sequenced in 100 RRMS patients using next-generation sequencing and compared with previously generated mtDNA data from 212 Polish individuals without MS.
sample size basisMATERIAL AND METHODS: Whole mtDNA was sequenced in 100 RRMS patients using next-generation sequencing and compared with previously generated mtDNA data from 212 Polish individuals without MS.
primary endpoint metNo significant associations were found between major mtDNA haplogroups, copy number, heteroplasmy, or rare variants and MS risk or progression.
research categoriesSeveral associations involving individual mtDNA variants were identified, but these findings are exploratory and require independent replication in larger cohorts before their biological or clinical relevance can be established.
relevant ms typesAIM OF THE STUDY: To evaluate the contribution of mitochondrial DNA (mtDNA) variation and four POLG mutations to disease susceptibility and course in Polish patients with relapsing-remitting multiple sclerosis (RRMS).
comparatorMATERIAL AND METHODS: Whole mtDNA was sequenced in 100 RRMS patients using next-generation sequencing and compared with previously generated mtDNA data from 212 Polish individuals without MS.
findingsNo pathogenic mtDNA variants or any of the four screened POLG variants were detected.
limitationsExploratory analyses identified nominal associations between several mtDNA variants and relapse occurrence, disability level, age at symptom onset, and sex in the RRMS cohort.
publication datePublication date: 2026-10-05
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