Case#: Patient 1, Female, age 40

DiseaseAssertion: STGD1

FamilyInfo: n/a

CasePresentingHPOs: HP:0007722, HP:0000608, HP:0000007

CaseHPOFreeText: Patient diagnosed with STGD type 1, presenting with retinal pigment atrophy as well as other symptoms typical of STGD1 with reduced visual acuity. Patient daignosed at age 16.

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a

Genotyping Method: Patient ABCA-4 gene sequenced via Sanger sequencing of all 50 exons, Splice variants were identified by synthesized cDNA from RNA isolation with RT-PCR analysis with exonic primers.

PreviouslyPublished: Variant 1 identified in association with retinal dystrophy in these PMC articles: 23982839, 25082829, 25082885, 28327576

Variant: NM_000350.3(ABCA4):c.859-9T>C, NM_000350.3(ABCA4):c.303-3C>G

ClinVar: 3249248, 859348

gnomAD total allele frequency: 0.005% of var . 1

CAID: n/a

SupplementalData: Fig 1: Minigene RNA analysis of splice variants. A: genomic region of exon 40 on ABCA-4. B: genomic regions of exons 39-41 to investigate specific variant:oncanonical splice site variant c.5714+5G>A Fig 2: overview of wild-type midigene splice constructs of ABCA-4 and locations of 47 different non canonical splice site variants Fig 3: Overview of splice defects from nine different non canonnical splice variants in ABCA-4 gene. Fig 4: percentages of normal ABCA-4 transcripts as a result of noncanonical splice variants using electrophoresis system analysis. Table 1: Non canonical splice variants and observed protein affects.