The future is coming! With experimental and computational advances, more and more laboratories and clinics are beginning to use #RNASeq for diagnosis of Mendelian diseases. Thanks to #MultiOmics solutions, we will see increasing diagnostic rates and increasing number of therapeutics available for #RareDiseases in coming years 🧬🧬
In a commentary paper (Montgomery et al., 2022, Toward transcriptomics as a primary tool for rare disease investigation), two years ago:
"Using an accessible patient sample, such as blood, skin, or muscle, RNA-Seq enables the assay of expressed RNA transcripts. Analysis of RNA-Seq allows the identification of aberrant or outlier gene expression and alternative splicing as functional evidence to support rare disease study and diagnosis...
It is estimated that the current diagnostic yield of DNA sequencing is 25%–30% in large, heterogeneous rare disease cohorts. In homogeneous rare diseases cohorts, the diagnostic yield can range from 40% to 60%. To investigate further increases to this yield, a number of studies in the past 5 years have used RNA sequencing... Across these research studies, the use of transcriptomics has predominantly been a secondary activity aimed to evaluate if aberrant expression or splicing events can improve identification of pathogenic variants in patients in whom DNA sequencing alone has not yielded a definitive genetic cause. Despite recent advances, clinical transcriptomic testing for Mendelian conditions is currently available from only a few reference laboratories.
...the future may see patients’ care informed by knowledge of their genetic variants and additionally their personal transcriptomic profile."
#Diagnostics #Genomics #Transcriptomics #GenomicsAndMore