Four Decades of Inquiry Into the Genetic Bases of Specific Reading Disability.

The literature review may not have captured all relevant genes, especially those published in non-English journals or found through methods not included in the search. The evolutionary analysis used only a few reference genomes, so it may not represent the full evolutionary history of these genes. The expression analyses used public datasets with limits in sample size, developmental time points, and brain regions. The Allen Brain Atlas data are mainly from neurotypical individuals, so the paper cannot show expression differences in people with reading disability. The single-cell analysis used adult primary motor cortex tissue, not brain tissue from children during periods important for reading acquisition. The clustering methods simplified gene-gene relationships and may have hidden more nuanced patterns. The paper did not connect these genetic pathways to tested reading interventions, so it cannot guide therapy choices.

Funding included National Institute on Deafness and Other Communication Disorders Grant R13DC003383, Texas Center for Learning Disabilities Grant P50HD052117, the Ministry of Science and Higher Education of the Russian Federation Agreement 075-10-2021-093 Project COG-RND-2138, and Saint Petersburg State University Project No. 125021902561-6. The supplied text names Saint Petersburg State University as a funder and does not list a separate author conflict-of-interest declaration.

Do not read this as proof that genetic testing can identify which reading intervention a child needs. The study analyzed gene lists and public brain data, not patients with reading disability, and the authors state that connecting interventions to these pathways requires future work.