The Mustafi Lab is investigating the genetic basis of inherited retinal degenerations (IRDs) and potentials for therapeutic intervention to prevent progression of blindness. In the pediatric population, IRDs are a major cause of visual impairment and can be one of the first presenting features of a syndromic condition. Early genetic diagnosis of such conditions may mitigate morbidity and allow appropriate genetic counseling.
The goal of the lab is to uncover the mechanistic details of IRDs to develop targeted therapies to benefit patient's visual needs.
Identification of disease-causing variants is essential and can lead to more timely and accurate diagnosis in patients to properly assess their inclusion in emerging therapies. However, in approximately 20% of patients with well-defined clinical features of an autosomal recessive IRD, only one mutation is identified with initial exome sequencing. In such cases, genome sequencing of the disease gene at increased depth can reveal the second pathogenic variant in non-coding regions of the disease gene of interest.
The Mustafi Lab is applying emerging long-read sequencing technology to better understand pathogenic variants that cause IRDs. Using blood and saliva samples from affected IRD patients and their families, the lab carries out genome sequencing to identify novel pathogenic variants of disease and reconstruct disease haplotypes, which has implications for the interpretation of disease risks. Isolated blood samples can also be used to generate patient-specific stem cells to better study the pathogenicity of disease variants.
Lab News
The Mustafi Lab was honored to receive two prestigious awards from the Research to Prevent Blindness for their work on retinoblastoma:
Debarshi Mustafi received the Physician Scientist Award
Elizabeth Rooks received the Medical Student Eye Research Fellowship
Read the full story here: https://ophthalmology.washington.edu/news/rpb-honors-debarshi-mustafi-md-phd-with-physician-scientist-award
Mark Lindquist, Stefan Stafie, Samson Darrah, and Liza Rooks all led important studies that were all recently published:
Rooks E, Darrah S, Rahimi B, Nakamichi K, Cech J, Mustafi D. Resolving Complex Retinal Alleles via Long-Read Sequencing. Accepted in press.
Lindquist M, Darrah S, Stafie S, Mustafi D. Benchmarking AlphaMissense Against ClinVar for Diagnostic Interpretation of Missense Variants in Inherited Retinal Diseases. Ophthalmology Science, 2025 Nov 10: doi 10.1016/j.xops.2025.100997.
Lindqusit M, Stafie ST, Ward C, Dassler A, Mustafi D. Oral fluorescein angiography allows for more precise detection of sickle cell retinopathy in pediatric patients. Journal of the American Association for Pediatric Ophthalmology and Strabismus, 2025 doi.org/10.1016/j.jaapos.2025.104683. PMID: 41167546. [Pubmed] [PDF]
Stafie ST, Lindquist M, Kushner-Lemhoff S, Nakamichi K, Mustafi D. Importance of genome reference and population datasets for annotation and prioritization of disease-causing variants in inherited retinal diseases. Ophthalmic Genetics, 2025 Aug 12:1-7. doi: 10.1080/13816810.2025.2544639. PMID: 40797289. [Pubmed] [PDF]