PatientID: 6

KindredID: 6

Case: F, 21Y6M, ethnicity unknown

DiseaseAssertion: Assumed VHL

FamilyInfo: Positive history, with symptomatic father (no mutation known)

CasePresentingHPOs: HP:0006880; HP:0009711; HP:0001737; HP:0000107 (cerebellar hemangioblastoma; retinal capillary hemangioma; pancreatic cysts; renal cyst)

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: c.464-1G>T

CaseProblemVariantFreeText: N/A

LegacyVariant: N/A

ClinVarID: 223221 https://www.ncbi.nlm.nih.gov/clinvar/variation/223221/

CAID: N/A

gnomAD: N/A

VariantEvidence: Compound heterozygous: Germline C to G base change at nucleotide 150 of exon 1, and G to T base change at -1 position of splice acceptor sequence for exon 3

MutationType: splice_site_variant

CivicName: [A50= (c.150C>G) and] Splice Site (c.463-1G>T)

MultipleGeneVariants: Germline, VHL, c.150C>G (p.Ala50Ala)

PatientID: II:1 (proband)

KindredID: 1

Case: M, 42Y0M, Chinese

DiseaseAssertion: VHL

FamilyInfo: The proband presented with VHL Type 2B. Sister presented with features of VHL Type 2A including cerebral hemangioblastomas, a right adrenal nodule, multiple cysts in the pancreas, multiple cysts in the liver, two brain lesions. The younger brother and their deceased father had hemangioblastomas in the central nervous system and ocular diseases, respectively. Despite having no information of detailed clinical data, it is reasonable to assume that they had VHL diseases. The father was also blind, but the reasons are unknown. The mother had no history of disease. Pedigree: see Figure 3.

CasePresentingHPOs: HP:0010797; HP:0005584; HP:0006770; HP:0030421 (Hemangioblastoma, Renal cell carcinoma, Clear cell renal cell carcinoma, Epididymal neoplasm)

CaseHPOFreeText: Ten years prior (at the age of 32), the patient received gamma knife treatment for cerebral hemangioblastomas. Magnetic resonance (MR) of the abdomen showed multiple solid lesions in the bilateral kidneys, multilocular renal cysts, a right adrenal nodule, multiple cysts and a solid lesion in the pancreas, and multiple cysts in the liver. The pathological manifestations confirmed ccRCC concurrent with simple renal cysts. The left side kidney showed multilocular cysts lined by clear cells. Pathology confirmed the presence of clusters of clear cells. mcRCC was confirmed pathologically. Scrotum MR suspected a malignant tumor on the right side epididymis.

CaseNotHPOs: HP:0000822; HP:0100631 (Hypertension, Neoplasm of the adrenal gland)

CaseNotHPOFreeText: No history of hypertension disease. Common tumor markers such as AFP, CEA, and PSA were normal. Special tests for adrenal lesions included plasma cortisol, renin angiotensin aldosterone, and urinary VMA, which were normal.

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: c.340+5G>C

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 36901, https://www.ncbi.nlm.nih.gov/clinvar/variation/36901/

CAID: CA020288, http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA020288

gnomAD: 0.01119, https://gnomad.broadinstitute.org/variant/3-10183876-G-C

VariantEvidence: Direct sequencing of DNA strands revealed 2 recurrent mutations of c.256C > T (p.P86S) and c.340 + 5G > C. Haplotype construction displayed that the c.256C > T (p.P86S) mutation in cis with c.340 + 5G > C were located on the disease haplotype. Bioinformatics analysis revealed that this mutation might severely destabilize the hydrophobic core of pVHL and cause VHL manifestations. This variant’s large allele frequency means this is likely non disease causing (not deleterious).

MutationType: splice_site_variant

CivicName: P86S (c.256C>T) and Splice Region (c.340+5G>C)

MultipleGeneVariants: Germline, VHL, c.256C>T (p.Pro86Ser)

Case: IP-4

DiseaseAssertion: VWD3

FamilyInfo: NA

ParentalGenotype(s): NA

CasePresentingHPOs:

CaseHPOFreeRext: VWF:Ag 3%

CaseNOTHPOs:

CaseNOTHPOFreeText:

CasePreviousTesting: Direct sequencing of exons 2–52 including exon/intron boundaries of the VWF gene

GenotypingMethod: multiple ligation‐dependent probe amplification (MLPA; using kit P011 and P012; MRC Holland, Amsterdam, the Netherlands) according to the manufacturer’s instructions. The PCR products were run on an ABI PRISM 3130XL sequencer with the GeneScan 500 LIZ size standard and analyzed using GeneMapper Software 5.0 (Applied Biosystems, Darmstadt, Germany). Dosage analysis based on a comparison between deleted and reference wild‐type DNA samples was performed using the Excel‐based software Coffalyser V9.4 (MRC Holland).

PreviouslyPublished: NA

Gene: VWF

Variant: p.Leu757ValfsX22

HGVS:

ClinVarID:

CAID:

gnomAD:

MultipleGeneVariants:

GeneName: VWF

Variant: deletion of exons 48-52

ClinVarID or CAID:

gnomAD:

Case: IP-3

DiseaseAssertion: VWD3

FamilyInfo: NA

ParentalGenotype(s): NA

CasePresentingHPOs: HP:0000421, HP:0000132

CaseHPOFreeRext: VWF:Ag 1%, VWF:RCo 5% and FVIII:C 1,4%. Repetitive epistaxis, cutaneous and muscles hematomas, postpartum bleedings and a heavy menorrhagia.

CaseNOTHPOs:

CaseNOTHPOFreeText:

CasePreviousTesting: Direct sequencing of exons 2–52 including exon/intron boundaries of the VWF gene

GenotypingMethod: multiple ligation‐dependent probe amplification (MLPA; using kit P011 and P012; MRC Holland, Amsterdam, the Netherlands) according to the manufacturer’s instructions. The PCR products were run on an ABI PRISM 3130XL sequencer with the GeneScan 500 LIZ size standard and analyzed using GeneMapper Software 5.0 (Applied Biosystems, Darmstadt, Germany). Dosage analysis based on a comparison between deleted and reference wild‐type DNA samples was performed using the Excel‐based software Coffalyser V9.4 (MRC Holland).

PreviouslyPublished: NA

Gene: VWF

Variant: deletion of exons 1-5

HGVS:

ClinVarID:

CAID:

gnomAD:

MultipleGeneVariants:

Gene: VWF

Variant: p.Arg924Gln

HGVS: NM_000552.5:c.2771G>A (p.Arg924Gln)

ClinVarID: 100240

CAID: CA228368

gnomAD: MAF of 0.02225 (26260/118006 alleles) in Eurpoean (non-Finnish)

https://gnomad.broadinstitute.org/variant/12-6031493-C-T?dataset=gnomad_r4

PatientID: IP (Proband)

KindredID: C

Case: M, 35Y0M, Hungarian

DiseaseAssertion: VHL

FamilyInfo: Index patient presented with cerebellar hemangioblastoma, renal cysts, pancreatic cyst and bilateral renal cell carcinomas. Family members were not available for clinical and genetic screening except a brother whose screening revealed no abnormality.

CasePresentingHPOs: HP:0006880; HP:0005562; HP:0005584; HP:0001737 (Cerebellar hemangioblastoma, Multiple renal cysts, Renal cell carcinoma, Pancreatic cysts)

CaseHPOFreeText: Patient was operated for cerebellar hemangioblastoma at the age of 33 years. Preoperative clinical screening also showed renal cysts. Two years later, a pancreatic cyst and bilateral renal cell carcinomas were found and the patients underwent bilateral nephrectomy with subsequent chronic hemodialysis. Diagnosed with VHL Type 1.

CaseNotHPOs: HP:0002666; HP:0009711 (Pheochromocytoma, Retinal capillary hemangioma)

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: Exon 3 Deletion (c.464-?_642+?del)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: N/A

CAID: N/A

gnomAD: N/A

VariantEvidence: Heterozygous deletion of Exon 3.

MutationType: exon_loss_variant

CivicName: Exon 3 Deletion

MultipleGeneVariants: N/A

Case#: Male, Family #2, patient #4, onset at 48y.o

DiseaseAssertion: STGD

FamilyInfo: proband sister(#3) identical ABCA4 allele to proband, developed central vision issues. Proband son has complex allele w/ early onset cone-rod dystrophy. Proband daughter(#6) has complex allele mutation, central vision issues developed at 17. retinal exam showed atrophic macular lesions. Proband second daughter(patient #5, asymptomatic)

CasePresentingHPOs: HP:0012508, HP:0030500

CaseHPOFreeText:Proband presented with bull's eye macular lesions with no fundus flecks. Normal rod-mediated amplitudes, normal single-flash response, reduces 32-Hz flicker amplitude.

CaseNotHPOs: n/a

CaseNotHPOFreeText: maintained foveal sparing in both eyes 20/25+2 R.E, 20/25+1 L.E.

Genotyping Method: Genotyping performed at Columbia University, sequencing technology used is not disclosed.

PreviouslyPublished: n/a

Variant: c.4139C>T (p.P1380L), BoldM1: c.5603A>T(p.N18681)[NM_000350.3(ABCA4):c.5603A>T (p.Asn1868Ile) - Variation ID 99390], M2: c.[1622T>C; 3113C>T] (p.[L541P; A1308V])

ClinVar: M1) 99390 M2) 99067

CAID: n/a

SupplementalData: Fig 1: Pedigree illustrating ABCA4 variants and the associated Stargardt phenotype for 5 families. Proband Labeled w/ white arrow for each family. Fig 2: retinal scan measuring melanin in 4 patients of family 2. Panel shows bull's-eye ring of RPE atropy. Fig 3: Macular SD-OCT line profile from b-scans. Reflectivity plotted against function of retinal depth. Table 1: table shows patients with p.N18681 variant, type of mutation, and pathogenicity class. Table 2: Patients, age on-set and first symptom

PMID: 10612508

Gene: ABCA4

Case#: Patient 1, 40-year-old female

DiseaseAssertion: STGD1

FamilyInfo: One of four affected siblings in a family of eight. Segregation consistent with autosomal recessive inheritance.

CasePresentingHPOs: HP:0000545 — Decreased visual acuity HP:0000612 — Central scotoma HP:0007754 — Macular atrophy HP:0030638 — Retinal flecks HP:0000512 — Abnormal fundus morphology

CaseHPOFreeText: Progressive decline in visual acuity since age 15. Best-corrected visual acuity RE 20/400, LE 20/150. Central scotomas reported. Fundus exam showed bilateral central macular atrophy (worse in right eye), pigment deposits at the level of the retinal pigment epithelium, and numerous yellow flecks in the midperiphery. Fluorescein angiography demonstrated central hypofluorescence corresponding to atrophy with surrounding hyperfluorescence and peripheral dark choroid.

CaseNotHPOs: HP:0000662 — Night blindness (absent)

CaseNotHPOFreeText: Patient denied nyctalopia.

GenotypingMethod: PCR amplification and direct sequencing of all 50 exons of ABCA4 following SSCP screening.

PreviouslyPublished: Yes

Variant: NM_000350.2:c.2588G>C (p.Gly863Ala) NM_000350.2:c.161G>A (p.Cys54Tyr)

ClinVar: Not reported

CAID: Not reported

SupplementalData: Segregation demonstrated in pedigree (Figure 1); mutation confirmation by sequencing (Figure 4)

PMID: 10612508

Gene: ABCA4

Case#: Patient 2, 46-year-old female

DiseaseAssertion: STGD1

FamilyInfo: One of four affected siblings in a family consistent with autosomal recessive inheritance.

CasePresentingHPOs: HP:0000545 — Decreased visual acuity HP:0007754 — Macular atrophy HP:0030638 — Retinal flecks HP:0000512 — Abnormal fundus morphology

CaseHPOFreeText: Progressive visual decline since age 16. Best-corrected visual acuity 20/400 in both eyes. Fundus examination showed bilateral symmetrical central chorioretinal atrophy (~3 disc diameters) with prominent pigment deposits and numerous yellow flecks in the posterior pole. Fluorescein angiography demonstrated central hypofluorescence with surrounding hyperfluorescence and peripheral dark choroid.

CaseNotHPOs: Not reported

CaseNotHPOFreeText: Not reported

GenotypingMethod: PCR amplification and direct sequencing of ABCA4 after SSCP screening

PreviouslyPublished: Yes

Variant: NM_000350.2:c.2588G>C (p.Gly863Ala) NM_000350.2:c.161G>A (p.Cys54Tyr)

ClinVar: Not reported

CAID: Not reported

SupplementalData: Segregation and sequencing data shown in Figures 1 and 4

Case#: Patient 3, 37-year-old female

PMID: 10612508

DiseaseAssertion: STGD1

FamilyInfo: Affected sibling in autosomal recessive family.

CasePresentingHPOs: HP:0000545 — Decreased visual acuity HP:0007754 — Macular atrophy HP:0030638 — Retinal flecks HP:0000512 — Abnormal fundus morphology

CaseHPOFreeText: Gradual visual decline beginning at age 12. Visual acuity 20/400 in both eyes. Fundus examination revealed bilateral macular atrophy with pigment deposits and numerous yellow flecks in the posterior pole and midperiphery. Fluorescein angiography showed large hypofluorescent regions with surrounding hyperfluorescence and peripheral dark choroid.

CaseNotHPOs: Not reported

CaseNotHPOFreeText: Not reported

GenotypingMethod: PCR and direct sequencing of ABCA4

PreviouslyPublished: Yes

Variant: NM_000350.2:c.2588G>C (p.Gly863Ala) NM_000350.2:c.161G>A (p.Cys54Tyr)

ClinVar: Not reported

CAID: Not reported

SupplementalData: Segregation and sequencing data (Figures 1, 4)

Case#: Female, Family #4, patient #8

DiseaseAssertion: STGD

FamilyInfo: Proband's daughter shares ABCA4 variant and struggled with difficulty focusing at age 19. BVCA 20/200 R.E and 20/80 in L.E.

CasePresentingHPOs: HP:0030500, HP:0007663, HP:0000608

CaseHPOFreeText: Proband's first symptom was difficulty with night vision occurring at 45 y.o, BVCA at 50 y.o in both eyes was 20/20. atrophy in macula and Stage 2 fundus flecks identified.

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a

Genotyping Method: Genotyping performed at Columbia University, sequencing technology used is not disclosed.

PreviouslyPublished: n/a

Variant: NM_000350.3(ABCA4):c.1622T>C (p.Leu541Pro), NM_000350.3(ABCA4):c.1957C>T (p.Arg653Cys)

ClinVar: M2) 99067, M5) 99108

CAID: n/a

SupplementalData: Fig 1: Pedigree illustrating ABCA4 variants and the associated Stargardt phenotype for 5 families. Proband Labeled w/ white arrow for each family. Fig 2: retinal scan measuring melanin in 4 patients of family 2. Panel shows bull's-eye ring of RPE atropy. Fig 3: Macular SD-OCT line profile from b-scans. Reflectivity plotted against function of retinal depth. Table 1: table shows patients with p.N18681 variant, type of mutation, and pathogenicity class. Table 2: Patients, age on-set and first symptom

Case#: Male, Family#3, Proband M1, M2: II,1 on pedigree

DiseaseAssertion: STGD

FamilyInfo: mother of proband has p.N18681 and p.P1380L mutations and is asymptomatic with no changes to NIR-AF and SD-OCT. Treated with 400mg of hydroxychloroquine for lupus prior to imaging. Non-affected father.

CasePresentingHPOs:HP:0007663, HP:0000493

CaseHPOFreeText: Proband has reduced visual acuity and issues reading with BCVA 20/200 in R.E and 20/50-2 in L.E. Oval foveal lesions with stage 2 flecks. Visual acuity reducing starting at age 10.

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a

Genotyping Method: Genotyping performed at Columbia University, sequencing technology used is not disclosed.

PreviouslyPublished: n/a

Variant: M1:p.P1380L, complex allele: M2: p.N18681 and IVS38:c.5461-10T>C. M3: c.4139C>T(p.P1380L)

ClinVar: M1) 99390 M2) 99067 M3) Variation ID: 7904

CAID: n/a

SupplementalData: Fig 1: Pedigree illustrating ABCA4 variants and the associated Stargardt phenotype for 5 families. Proband Labeled w/ white arrow for each family. Fig 2: retinal scan measuring melanin in 4 patients of family 2. Panel shows bull's-eye ring of RPE atropy. Fig 3: Macular SD-OCT line profile from b-scans. Reflectivity plotted against function of retinal depth. Table 1: table shows patients with p.N18681 variant, type of mutation, and pathogenicity class. Table 2: Patients, age on-set and first symptom

Case#: Female, family #5, Patient #20

DiseaseAssertion: STGD

FamilyInfo: Proband's sister presented with same clinical prognosis. Sister diagnosed with pattern dystrophy and photoaversion at age 57, with difficulty seeing at night. Sister has nuclear sclerotic and cortical cataracts in both eyes.

CasePresentingHPOs: HP:0000662, HP:0000603, HP:0000603, HP:0000493

CaseHPOFreeText: Proband presented with localized blur at age 62, (late onset) in her left eye. BVCA 20/20-3 and 20/20-2 at age 70. Also has macular lesions with stage 2 fundus flecks.

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a

Genotyping Method: Genotyping performed at Columbia University, sequencing technology used is not disclosed.

PreviouslyPublished: n/a

Variant: p.N18681, IVS36:c.5196+1G>A

ClinVar: M2) 99067, M6) 99351

CAID: N/A

SupplementalData: Fig 1: Pedigree illustrating ABCA4 variants and the associated Stargardt phenotype for 5 families. Proband Labeled w/ white arrow for each family. Fig 2: retinal scan measuring melanin in 4 patients of family 2. Panel shows bull's-eye ring of RPE atropy. Fig 3: Macular SD-OCT line profile from b-scans. Reflectivity plotted against function of retinal depth. Table 1: table shows patients with p.N18681 variant, type of mutation, and pathogenicity class. Table 2: Patients, age on-set and first symptom

Case#: Patient 231, Female, age of onset at 7 y.o, Poland

DiseaseAssertion: STGD1

FamilyInfo: Mother was a carrier, unaffected father.

CasePresentingHPOs: HP:0007722, HP:0000608, HP:0025158

CaseHPOFreeText: RPE atrophy, macular degeneration, central hyper-autofluorescence in fundus autofluorescence

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a, non-proband identified HPO's mentioned, but not assignable to individual proband.

Genotyping Method: DNA isolated from peripheral blood from patients and relatives via MagNA Pure 24, samples screened with MIPs targeting 108 genes involved in pathogensis of IRD's. PCR completed on library, analysed with NGS fragment analysis kit.

PreviouslyPublished: yes

Variant: c.4234C>T , p.(Gln1412*)

ClinVar: 99263

gnomeAD 0.00001984 allelic frequency

CAID: n/a

SupplementalData: Fig1: List of families displaying pseudo-dominant inheritance. Fig2: Number of alleles for most common variants.

Case#: Patient 225, Female, age of onset 7 y.o, Poland

DiseaseAssertion: STGD-1

FamilyInfo: no given family information.

CasePresentingHPOs: HP:0007722, HP:0000608, HP:0025158

CaseHPOFreeText: RPE atrophy, macular degeneration, central hyper-autofluorescence in fundus autofluorescence

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a, non-proband identified HPO's mentioned, but not assignable to individual proband.

Genotyping Method: DNA isolated from peripheral blood from patients and relatives via MagNA Pure 24, samples screened with MIPs targeting 108 genes involved in pathogensis of IRD's. PCR completed on library, analysed with NGS fragment analysis kit.

PreviouslyPublished: yes

Variant: c.634C>T,p.(Arg212Cys)

ClinVar: 7898

CAID: n/a

gnomeAD 0.0001177 allele frequency

SupplementalData: Fig1: List of families displaying pseudo-dominant inheritance. Fig2: Number of alleles for most common variants.

Case#: Patient 231, Female, age of onset at 7 y.o, Poland

DiseaseAssertion: STGD1

FamilyInfo: Mother was a carrier, unaffected father.

CasePresentingHPOs: HP:0007722, HP:0000608, HP:0025158

CaseHPOFreeText: RPE atrophy, macular degeneration, central hyper-autofluorescence in fundus autofluorescence

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a, non-proband identified HPO's mentioned, but not assignable to individual proband.

Genotyping Method: DNA isolated from peripheral blood from patients and relatives via MagNA Pure 24, samples screened with MIPs targeting 108 genes involved in pathogensis of IRD's. PCR completed on library, analysed with NGS fragment analysis kit.

PreviouslyPublished: yes

Variant: c.5882G>A

ClinVar:7888

gnomeAD: 0.00310 allelic freq.

CAID: n/a

SupplementalData: Fig1: List of families displaying pseudo-dominant inheritance. Fig2: Number of alleles for most common variants.

Case#: Patient 225, Female, age of onset 7 y.o, Poland

DiseaseAssertion: STGD-1

FamilyInfo: no given family information.

CasePresentingHPOs: HP:0007722, HP:0000608, HP:0025158

CaseHPOFreeText: RPE atrophy, macular degeneration, central hyper-autofluorescence in fundus autofluorescence

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a, non-proband identified HPO's mentioned, but not assignable to individual proband.

Genotyping Method: DNA isolated from peripheral blood from patients and relatives via MagNA Pure 24, samples screened with MIPs targeting 108 genes involved in pathogensis of IRD's. PCR completed on library, analysed with NGS fragment analysis kit.

PreviouslyPublished: yes

Variant: c.[1622T>C;3113C>T]

ClinVar: 99067, 7894

CAID: n/a

gnomeAD 0.0001266 allele frequency

SupplementalData: Fig1: List of families displaying pseudo-dominant inheritance. Fig2: Number of alleles for most common variants.

PMID: 39421326 (PMCID: PMC11675205)

Gene: ABCA4

HGNC ID: 34

Case#: Patient 24 (male)

DiseaseAssertion: STGD (Stargardt disease)

FamilyInfo: Caucasian family from Germany. Patient has two siblings carrying the variant but they are not clinically affected according to pedigree information.

CasePresentingHPOs: Decreased central visual acuity (HP:0000545) Macular atrophy (HP:0007754) Retinal flecks (HP:0030638) Abnormal fundus autofluorescence (HP:0030647) Macular degeneration (HP:0007754) Abnormal electroretinogram (HP:0000763)

CaseHPOFreeText: Male patient diagnosed before age 50 with Stargardt disease. Best corrected visual acuity (BCVA) approximately 0.05–0.2. Fundus imaging shows paracentral scotoma, macular atrophy, and hyperfluorescent flecks with sparing of the fovea. Autofluorescence demonstrates hyperreflective spots and patchy lesions with parafoveal involvement.

CaseNotHPOs: None explicitly reported.

CaseNotHPOFreeText: Pattern-like distribution of lesions noted on clinical examination.

Genotyping Method: Whole-exome sequencing (WES) with an in-house RD-associated gene panel including 619 candidate and disease-associated genes.

PreviouslyPublished: No (novel complex deep-intronic allele described in this study).

Variant: c.[1555-5882C>A;1555-5784C>G]

ClinVar: Not reported in ClinVar in the provided information.

CAID: CA272741; CA227172

SupplementalData: Segregation data and functional splicing analysis available in the supplemental data (Table S1, Figure S1) of the article.

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.

Case#: Female, family #5, Patient #20

DiseaseAssertion: STGD

FamilyInfo: Proband's sister presented with same clinical prognosis. Sister diagnosed with pattern dystrophy and photoaversion at age 57, with difficulty seeing at night. Sister has nuclear sclerotic and cortical cataracts in both eyes.

CasePresentingHPOs: HP:0000662, HP:0000603, HP:0000603, HP:0000493

CaseHPOFreeText: Proband presented with localized blur at age 62, (late onset) in her left eye. BVCA 20/20-3 and 20/20-2 at age 70. Also has macular lesions with stage 2 fundus flecks.

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a

Genotyping Method: Genotyping performed at Columbia University, sequencing technology used is not disclosed.

PreviouslyPublished: n/a

Variant: p.N18681, IVS36:c.5196+1G>A

ClinVar: M2) 99067, M6) 99351

CAID: N/A

SupplementalData: Fig 1: Pedigree illustrating ABCA4 variants and the associated Stargardt phenotype for 5 families. Proband Labeled w/ white arrow for each family. Fig 2: retinal scan measuring melanin in 4 patients of family 2. Panel shows bull's-eye ring of RPE atropy. Fig 3: Macular SD-OCT line profile from b-scans. Reflectivity plotted against function of retinal depth. Table 1: table shows patients with p.N18681 variant, type of mutation, and pathogenicity class. Table 2: Patients, age on-set and first symptom

Case#: Patient 225, Female, age of onset 7 y.o, Poland

DiseaseAssertion: STGD-1

FamilyInfo: no given family information.

CasePresentingHPOs: HP:0007722, HP:0000608, HP:0025158

CaseHPOFreeText: RPE atrophy, macular degeneration, central hyper-autofluorescence in fundus autofluorescence

CaseNotHPOs: n/a

CaseNotHPOFreeText: n/a, non-proband identified HPO's mentioned, but not assignable to individual proband.

Genotyping Method: DNA isolated from peripheral blood from patients and relatives via MagNA Pure 24, samples screened with MIPs targeting 108 genes involved in pathogensis of IRD's. PCR completed on library, analysed with NGS fragment analysis kit.

PreviouslyPublished: yes

Variant: c.[1622T>C;3113C>T]

ClinVar: 99067, 7894

CAID: n/a

gnomeAD 0.0001266 allele frequency

SupplementalData: Fig1: List of families displaying pseudo-dominant inheritance. Fig2: Number of alleles for most common variants.