The qMini assay identifies an overlooked class of splice variants
Related Experiment Video
Updated: Jul 8, 2025

Merging Absolute and Relative Quantitative PCR Data to Quantify STAT3 Splice Variant Transcripts
Published on: October 9, 2016
Bin Guan1, Chelsea Bender1, Madhulatha Pantrangi2
1Ophthalmic Genetics and Visual Function Branch, National Eye Institute, National Institutes of Health, Bethesda, MD.
Abstract:
Splice variants are known to cause diseases by utilizing alternative splice sites, potentially resulting in protein truncation or mRNA degradation by nonsense-mediated decay. Splice variants are verified when altered mature mRNA sequences are identified in RNA analyses or minigene assays. Using a quantitative minigene assay, qMini, we uncovered a previously overlooked class of disease-associated splice variants that did not alter mRNA sequence but decreased mature mRNA level, suggesting a potentially new pathogenic mechanism.
Insights
Disease-causing splice variants typically alter mRNA sequences. Our study identified a new class of splice variants that decrease mature mRNA levels without changing the sequence, revealing a novel disease mechanism.
Area of Science:
- Molecular Biology
- Genetics
- Disease Mechanisms
Background:
- Alternative splicing can lead to disease by altering mature mRNA sequences.
- Established methods for identifying splice variants include RNA analyses and minigene assays.
- Known consequences of altered splicing include protein truncation and nonsense-mediated mRNA decay.
Conclusions:
- Splice variants can contribute to disease through mechanisms beyond sequence alteration.
- Decreased mature mRNA levels, independent of sequence changes, represent a potential pathogenic pathway.
- The qMini assay is effective in identifying these previously overlooked splice variants.
Related Concept Videos
Alternative RNA Splicing
RNA Splicing
Pre-mRNA Processing: RNA Splicing

