ABCA4 p.Asp645Asn
| ClinVar: |
c.1933G>A
,
p.Asp645Asn
?
, not provided
|
| Predicted by SNAP2: | A: D (75%), C: D (75%), E: N (57%), F: D (85%), G: D (71%), H: D (75%), I: D (80%), K: D (66%), L: D (85%), M: D (80%), N: D (91%), P: D (75%), Q: D (71%), R: D (75%), S: D (66%), T: D (59%), V: D (75%), W: D (91%), Y: D (80%), |
| Predicted by PROVEAN: | A: D, C: D, E: D, F: D, G: D, H: D, I: D, K: D, L: D, M: D, N: D, P: D, Q: D, R: D, S: D, T: D, V: D, W: D, Y: D, |
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[hide] Evolution of ABCA4 proteins in vertebrates. J Mol Evol. 2005 Jan;60(1):72-80. Yatsenko AN, Wiszniewski W, Zaremba CM, Jamrich M, Lupski JR
Evolution of ABCA4 proteins in vertebrates.
J Mol Evol. 2005 Jan;60(1):72-80., [PMID:15696369]
Abstract [show]
The ABCA4 (ABCR) gene encodes a retinal-specific ATP-binding cassette transporter. Mutations in ABCA4 are responsible for several recessive macular dystrophies and susceptibility to age related macular degeneration (AMD). The protein appears to function as a flippase of all-trans-retinaldehyde and/or its derivatives across the membrane of outer segment disks and is a potentially important element in recycling visual cycle metabolites. However, the understanding of ABCA4's role in the visual cycle is limited due to the lack of a direct functional assay. An evolutionary analysis of ABCA4 may aid in the identification of conserved elements, the preservation of which implies functional importance. To date, only human, murine, and bovine ABCA4 genes are described. We have identified ABCA4 genes from African (Xenopus laevis) and Western (Silurana tropicalis) clawed frogs. A comparative analysis describing the evolutionary relationships between the frog ABCA4s, annotated T. rubripes ABCA4, and mammalian ABCA4 proteins was carried out. Several segments are conserved in both intradiscal loop (IL) domains, in addition to the transmembrane and ATP-binding domains. Nonconserved segments were found in the IL and cytoplasmic linker domains. Maximum likelihood analyses of the aligned sequences strongly suggest that ABCA4 was subject to purifying selection. Collectively, these data corroborate the current evolutionary model where two distinct ABCA half-transporter progenitors were combined to form a full ABCA4 progenitor in ancestral chordates. We speculate that evolutionary alterations may increase the retinoid metabolite recycling capacity of ABCA4 and may improve dark adaptation.
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No. Sentence Comment
130 As anticipated, the most frequently occurring STGD- associated missense ABCA4 alterations (R212C, L541P, D645N, G863A, A1038V, R1108C, R1380L, W1408R, T1526M, R1640W, G1961E, L2027F, and L2030Q) map to highly conserved regions.
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ABCA4 p.Asp645Asn 15696369:130:104
status: NEW[hide] Genotyping microarray (gene chip) for the ABCR (AB... Hum Mutat. 2003 Nov;22(5):395-403. Jaakson K, Zernant J, Kulm M, Hutchinson A, Tonisson N, Glavac D, Ravnik-Glavac M, Hawlina M, Meltzer MR, Caruso RC, Testa F, Maugeri A, Hoyng CB, Gouras P, Simonelli F, Lewis RA, Lupski JR, Cremers FP, Allikmets R
Genotyping microarray (gene chip) for the ABCR (ABCA4) gene.
Hum Mutat. 2003 Nov;22(5):395-403., [PMID:14517951]
Abstract [show]
Genetic variation in the ABCR (ABCA4) gene has been associated with five distinct retinal phenotypes, including Stargardt disease/fundus flavimaculatus (STGD/FFM), cone-rod dystrophy (CRD), and age-related macular degeneration (AMD). Comparative genetic analyses of ABCR variation and diagnostics have been complicated by substantial allelic heterogeneity and by differences in screening methods. To overcome these limitations, we designed a genotyping microarray (gene chip) for ABCR that includes all approximately 400 disease-associated and other variants currently described, enabling simultaneous detection of all known ABCR variants. The ABCR genotyping microarray (the ABCR400 chip) was constructed by the arrayed primer extension (APEX) technology. Each sequence change in ABCR was included on the chip by synthesis and application of sequence-specific oligonucleotides. We validated the chip by screening 136 confirmed STGD patients and 96 healthy controls, each of whom we had analyzed previously by single strand conformation polymorphism (SSCP) technology and/or heteroduplex analysis. The microarray was >98% effective in determining the existing genetic variation and was comparable to direct sequencing in that it yielded many sequence changes undetected by SSCP. In STGD patient cohorts, the efficiency of the array to detect disease-associated alleles was between 54% and 78%, depending on the ethnic composition and degree of clinical and molecular characterization of a cohort. In addition, chip analysis suggested a high carrier frequency (up to 1:10) of ABCR variants in the general population. The ABCR genotyping microarray is a robust, cost-effective, and comprehensive screening tool for variation in one gene in which mutations are responsible for a substantial fraction of retinal disease. The ABCR chip is a prototype for the next generation of screening and diagnostic tools in ophthalmic genetics, bridging clinical and scientific research.
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No. Sentence Comment
115 Mutations Detected in theTwoTest Populations by the ABCR400 Array,That Had Not Been Found by SSCP Number Nucleotide change Protein e¡ect Number of cases 1 161G4A C54Y 3 2 194G4A G65E 1 3 428C4T P143L 1 4 455G4A R152Q 1 5 514G4A G172S 1 6 635G4A R212H 1 7 656G4C R219T 1 8 768G4Ta Splice/V256V 3 9 1007C4G S336C 2 10 1268A4G H423R 4 11 1411G4A E471K 2 12 1622T4Ca L541P 8 13 1933G4A D645N 1 14 2041C4T R681X 5 15 2090G4A W697X 1 16 2471T4C I824T 1 17 2588G4Ca Splice/G863A 5 18 2828G4A R943Q 1 19 2966T4C V989A 1 20 2971G4C G991R 1 21 4139C4T P1380L 8 22 4195G4A E1399K 1 23 4328G4A R1443H 1 24 4457C4T P1486L 1 25 4462T4Ca C1488R 1 26 4469G4Aa C1490Y 1 27 4918C4Ta R1640W 2 28 IVS40+5G4A Splice 2 29 5537T4C I1846T 2 30 5882G4A G1961E 5 31 6089G4A R2030Q 1 32 6104T4C L2035P 1 33 6449G4A C2150Y 1 Mutation numbering is based on the cDNA sequence (GenBank NM_000350).
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ABCA4 p.Asp645Asn 14517951:115:387
status: NEW[hide] Cosegregation and functional analysis of mutant AB... Hum Mol Genet. 2001 Nov 1;10(23):2671-8. Shroyer NF, Lewis RA, Yatsenko AN, Wensel TG, Lupski JR
Cosegregation and functional analysis of mutant ABCR (ABCA4) alleles in families that manifest both Stargardt disease and age-related macular degeneration.
Hum Mol Genet. 2001 Nov 1;10(23):2671-8., [PMID:11726554]
Abstract [show]
Mutations in ABCR (ABCA4) have been reported to cause a spectrum of autosomal recessively inherited retinopathies, including Stargardt disease (STGD), cone-rod dystrophy and retinitis pigmentosa. Individuals heterozygous for ABCR mutations may be predisposed to develop the multifactorial disorder age-related macular degeneration (AMD). We hypothesized that some carriers of STGD alleles have an increased risk to develop AMD. We tested this hypothesis in a cohort of families that manifest both STGD and AMD. With a direct-sequencing mutation detection strategy, we found that AMD-affected relatives of STGD patients are more likely to be carriers of pathogenic STGD alleles than predicted based on chance alone. We further investigated the role of AMD-associated ABCR mutations by testing for expression and ATP-binding defects in an in vitro biochemical assay. We found that mutations associated with AMD have a range of assayable defects ranging from no detectable defect to apparent null alleles. Of the 21 missense ABCR mutations reported in patients with AMD, 16 (76%) show abnormalities in protein expression, ATP-binding or ATPase activity. We infer that carrier relatives of STGD patients are predisposed to develop AMD.
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No. Sentence Comment
84 The seventh mutation, D645N, had an increased affinity for ATP determined by these ATP-labeling experiments.
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ABCA4 p.Asp645Asn 11726554:84:22
status: NEW97 Pedigree Maternal allele Paternal allele AMD relative A priori Cosegregation AR19 pGM, -6 0.5 - AR33 [W1408R; R1640W] R24H and D1532N mA, -16 0.5 Yes AR59 4232insTATG C1488R pGM, -6 0.5 No AR80 T1526M pGF, -5 0.5 - AR80 T1526M mGF, -7 0.5 Yes AR125 4947delC C1488R pGM, -7 0.5 Yes AR215 [H1406Y; V2050L] pGM, -5 0.5 - AR218 2160+1G→C G1961E mA, -8 0.5 No AR262 W821R pGGF, -7 0.25 No AR271 P68R E1087K mGA, -6 0.25 No AR335 D645N F608I mGM, -9 0.5 Yes AR382 R1108C mGM, -6 0.5 Yes AR389 E2096K 5714+5G→A pGM, -8 0.5 Yes AR397 5196+1G→A 5585-1G→A mA, -5 0.5 No AR410 A1038V 768G→T pC, -5 0.25 Yes AR422 pGM, -6 0.5 - AR423 P1380L D1532N pGF, -4 0.5 No AR468 P1380L P1380L mU, -9 0.5 Yes AR484 L2027F G550R mGU, -5 0.25 Yes AR562 R2107H 3050+5G→A pGU, -5 0.25 No AR643 5196+2T→C L2027F mU, -4 0.5 Yes AR661 P1380L C54Y mGF, -6 0.5 Yes AR669 664del13 pGF, -4 0.5 No AR534 W821R P1380L pGM, -7 0.5 Yes (17) Family 1 R212C I2113M mGM, I-2 0.5 Yes (27) Family 2 R1108C R2107H mGM, I-2 0.5 Yes (27) Family 3 R212C G1977S mGF, I-1 0.5 Yes (27) 10.25 15 unlikely to account for many of the remaining alleles (our unpublished observations).
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ABCA4 p.Asp645Asn 11726554:97:430
status: NEW116 To analyze the function of AMD-associated ABCR mutations, we characterized the effects of seven different missense mutations (D645N, T901A, T1428M, R1517S, I1562T, G1578R and L1970F) on protein expression and ATP binding.
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ABCA4 p.Asp645Asn 11726554:116:126
status: NEW117 We found that six of these mutations substantially reduced the ATP-binding ability of the mutant protein, whereas the mutation D645N showed no apparent defect compared to wild-type and actually had an increased affinity for ATP (Fig. 2).
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ABCA4 p.Asp645Asn 11726554:117:127
status: NEW[hide] Genotype/Phenotype analysis of a photoreceptor-spe... Am J Hum Genet. 1999 Feb;64(2):422-34. Lewis RA, Shroyer NF, Singh N, Allikmets R, Hutchinson A, Li Y, Lupski JR, Leppert M, Dean M
Genotype/Phenotype analysis of a photoreceptor-specific ATP-binding cassette transporter gene, ABCR, in Stargardt disease.
Am J Hum Genet. 1999 Feb;64(2):422-34., [PMID:9973280]
Abstract [show]
Mutation scanning and direct DNA sequencing of all 50 exons of ABCR were completed for 150 families segregating recessive Stargardt disease (STGD1). ABCR variations were identified in 173 (57%) disease chromosomes, the majority of which represent missense amino acid substitutions. These ABCR variants were not found in 220 unaffected control individuals (440 chromosomes) but do cosegregate with the disease in these families with STGD1, and many occur in conserved functional domains. Missense amino acid substitutions located in the amino terminal one-third of the protein appear to be associated with earlier onset of the disease and may represent misfolding alleles. The two most common mutant alleles, G1961E and A1038V, each identified in 16 of 173 disease chromosomes, composed 18.5% of mutations identified. G1961E has been associated previously, at a statistically significant level in the heterozygous state, with age-related macular degeneration (AMD). Clinical evaluation of these 150 families with STGD1 revealed a high frequency of AMD in first- and second-degree relatives. These findings support the hypothesis that compound heterozygous ABCR mutations are responsible for STGD1 and that some heterozygous ABCR mutations may enhance susceptibility to AMD.
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No. Sentence Comment
76 2 0071GrA R24H 1 19 2894ArG N965S 3 36 5196ϩ1GrA Splice 2 3 0161GrA C54Y 1 21 3113CrT A1038V 16 5196ϩ2TrC Splice 1 0179CrT A60V 1 22 3211insGT FS 1 37 5281del9 PAL1761del 1 0203CrG P68R 1 3212CrT S1071L 1 38 5459GrC R1820P 1 0223TrG C75G 1 3215TrC V1072A 1 39 5512CrT H1838Y 1 6 0634CrT R212C 1 3259GrA E1087K 1 5527CrT R1843W 1 0664del13 FS 1 3322CrT R1108C 6 40 5585-1GrA Splice 1 0746ArG D249G 1 23 3364GrA E1122K 1 5657GrA G1886E 1 8 1007CrG S336C 1 3385GrT R1129C 1 5693GrA R1898H 4 1018TrG Y340D 1 3386GrT R1129L 2 5714ϩ5GrA Splice 8 11 1411GrA E471K 1 24 3602TrG L1201R 1 42 5882GrA G1961E 16 12 1569TrG D523E 1 25 3610GrA D1204N 1 5898ϩ1GrT Splice 3 1622TrC L541P 1 28 4139CrT P1380L 4 43 5908CrT L1970F 1 1715GrA R572Q 2 4216CrT H1406Y 1 5929GrA G1977S 1 1715GrC R572P 1 4222TrC W1408R 4 6005ϩ1GrT Splice 1 13 1804CrT R602W 1 4232insTATG FS 1 44 6079CrT L2027F 11 1822TrA F608I 2 4253ϩ5GrT Splice 1 6088CrT R2030X 1 1917CrA Y639X 1 29 4297GrA V1433I 1 6089GrA R2030Q 1 1933GrA D645N 1 4316GrA G1439D 2 6112CrT R2038W 1 14 2005delAT FS 1 4319TrC F1440S 1 45 6148GrC V2050L 2 2090GrA W697X 1 4346GrA W1449X 1 6166ArT K2056X 1 2160ϩ1GrC Splice 1 30a 4462TrC C1488R 2 6229CrT R2077W 1 16 2453GrA G818E 1 4457CrT P1486L 1 46 6286GrA E2096K 1 2461TrA W821R 1 30b 4469GrA C1490Y 3 6316CrT R2106C 1 2536GrC D846H 1 4539ϩ1GrT Splice 1 47 6391GrA E2131K 1 2552GrC G851D 1 31 4577CrT T1526M 7 6415CrT R2139W 1 17 2588GrC G863A 11 4594GrA D1532N 3 6445CrT R2149X 1 19 2791GrA V931M 2 35 4947delC FS 1 48 6543del36 1181del12 1 2827CrT R943W 1 36 5041del15 VVAIC1681del 2 6709insG FS 1 2884delC FS 1 5087GrA S1696N 1 NOTE.-FS ϭ frameshift.
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ABCA4 p.Asp645Asn 9973280:76:1022
status: NEW149 Two compound heterozygous families, AR335 and AR341, had both mutations in the same exon (F608I/D645N in exon 13 and P1380L/W1408R in exon 28, respectively) and had an early age at onset of 6 years.
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ABCA4 p.Asp645Asn 9973280:149:96
status: NEW77 2 0071GrA R24H 1 19 2894ArG N965S 3 36 5196af9;1GrA Splice 2 3 0161GrA C54Y 1 21 3113CrT A1038V 16 5196af9;2TrC Splice 1 0179CrT A60V 1 22 3211insGT FS 1 37 5281del9 PAL1761del 1 0203CrG P68R 1 3212CrT S1071L 1 38 5459GrC R1820P 1 0223TrG C75G 1 3215TrC V1072A 1 39 5512CrT H1838Y 1 6 0634CrT R212C 1 3259GrA E1087K 1 5527CrT R1843W 1 0664del13 FS 1 3322CrT R1108C 6 40 5585afa;1GrA Splice 1 0746ArG D249G 1 23 3364GrA E1122K 1 5657GrA G1886E 1 8 1007CrG S336C 1 3385GrT R1129C 1 5693GrA R1898H 4 1018TrG Y340D 1 3386GrT R1129L 2 5714af9;5GrA Splice 8 11 1411GrA E471K 1 24 3602TrG L1201R 1 42 5882GrA G1961E 16 12 1569TrG D523E 1 25 3610GrA D1204N 1 5898af9;1GrT Splice 3 1622TrC L541P 1 28 4139CrT P1380L 4 43 5908CrT L1970F 1 1715GrA R572Q 2 4216CrT H1406Y 1 5929GrA G1977S 1 1715GrC R572P 1 4222TrC W1408R 4 6005af9;1GrT Splice 1 13 1804CrT R602W 1 4232insTATG FS 1 44 6079CrT L2027F 11 1822TrA F608I 2 4253af9;5GrT Splice 1 6088CrT R2030X 1 1917CrA Y639X 1 29 4297GrA V1433I 1 6089GrA R2030Q 1 1933GrA D645N 1 4316GrA G1439D 2 6112CrT R2038W 1 14 2005delAT FS 1 4319TrC F1440S 1 45 6148GrC V2050L 2 2090GrA W697X 1 4346GrA W1449X 1 6166ArT K2056X 1 2160af9;1GrC Splice 1 30a 4462TrC C1488R 2 6229CrT R2077W 1 16 2453GrA G818E 1 4457CrT P1486L 1 46 6286GrA E2096K 1 2461TrA W821R 1 30b 4469GrA C1490Y 3 6316CrT R2106C 1 2536GrC D846H 1 4539af9;1GrT Splice 1 47 6391GrA E2131K 1 2552GrC G851D 1 31 4577CrT T1526M 7 6415CrT R2139W 1 17 2588GrC G863A 11 4594GrA D1532N 3 6445CrT R2149X 1 19 2791GrA V931M 2 35 4947delC FS 1 48 6543del36 1181del12 1 2827CrT R943W 1 36 5041del15 VVAIC1681del 2 6709insG FS 1 2884delC FS 1 5087GrA S1696N 1 NOTE.-FS afd; frameshift.
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ABCA4 p.Asp645Asn 9973280:77:1028
status: NEW150 Two compound heterozygous families, AR335 and AR341, had both mutations in the same exon (F608I/D645N in exon 13 and P1380L/W1408R in exon 28, respectively) and had an early age at onset of 6 years.
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ABCA4 p.Asp645Asn 9973280:150:96
status: NEW[hide] Molecular diagnostic testing by eyeGENE: analysis ... Invest Ophthalmol Vis Sci. 2014 Jul 31;55(9):5510-21. doi: 10.1167/iovs.14-14359. Alapati A, Goetz K, Suk J, Navani M, Al-Tarouti A, Jayasundera T, Tumminia SJ, Lee P, Ayyagari R
Molecular diagnostic testing by eyeGENE: analysis of patients with hereditary retinal dystrophy phenotypes involving central vision loss.
Invest Ophthalmol Vis Sci. 2014 Jul 31;55(9):5510-21. doi: 10.1167/iovs.14-14359., [PMID:25082885]
Abstract [show]
PURPOSE: To analyze the genetic test results of probands referred to eyeGENE with a diagnosis of hereditary maculopathy. METHODS: Patients with Best macular dystrophy (BMD), Doyne honeycomb retinal dystrophy (DHRD), Sorsby fundus dystrophy (SFD), or late-onset retinal degeneration (LORD) were screened for mutations in BEST1, EFEMP1, TIMP3, and CTRP5, respectively. Patients with pattern dystrophy (PD) were screened for mutations in PRPH2, BEST1, ELOVL4, CTRP5, and ABCA4; patients with cone-rod dystrophy (CRD) were screened for mutations in CRX, ABCA4, PRPH2, ELOVL4, and the c.2513G>A p.Arg838His variant in GUCY2D. Mutation analysis was performed by dideoxy sequencing. Impact of novel variants was evaluated using the computational tool PolyPhen. RESULTS: Among the 213 unrelated patients, 38 had BMD, 26 DHRD, 74 PD, 8 SFD, 6 LORD, and 54 CRD; six had both PD and BMD, and one had no specific clinical diagnosis. BEST1 variants were identified in 25 BMD patients, five with novel variants of unknown significance (VUS). Among the five patients with VUS, one was diagnosed with both BMD and PD. A novel EFEMP1 variant was identified in one DHRD patient. TIMP3 novel variants were found in two SFD patients, PRPH2 variants in 14 PD patients, ABCA4 variants in four PD patients, and p.Arg838His GUCY2D mutation in six patients diagnosed with dominant CRD; one patient additionally had a CRX VUS. ABCA4 mutations were identified in 15 patients with recessive CRD. CONCLUSIONS: Of the 213 samples, 55 patients (26%) had known causative mutations, and 13 (6%) patients had a VUS that was possibly pathogenic. Overall, selective screening for mutations in BEST1, PRPH2, and ABCA4 would likely yield the highest success rate in identifying the genetic basis for macular dystrophy phenotypes. Because of the overlap in phenotypes between BMD and PD, it would be beneficial to screen genes associated with both diseases.
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No. Sentence Comment
39 Mutations and Unknown Variants Detected in Patients With Central Vision Loss Patient Gene Exon DNA Change Protein Change Genotype Result PolyPhen Description PolyPhen Score Molecular Diagnosis Late-onset retinal degeneration NA CTRP5 NA NA NA NA NA NA Sorsby fundus dystrophy Patient 1 TIMP3 1 c.113C>G p.Ser38Cys Het vAR/us Probably damaging 1 Positive Patient 2 TIMP3 1 c.113C>G p.Ser38Cys Het vAR/us Probably damaging 1 Positive Patient 3 TIMP3 5 c.610A>T p.Ser204Cys Het Mut Positive Doyne honeycomb dystrophy Patient 1 EFEMP1 9 c.1033C>T p.Arg345Trp Het Mut Positive Patient 2 EFEMP1 9 c.1033C>T p.Arg345Trp Het Mut Positive Patient 3 EFEMP1 IVS10 c.IVS10-14C>T None Het vAR/us NA NA Unconfirmed Best macular dystrophy Patient 1 BEST1 2 c.28G>A p.Ala10Thr Het Mut Positive Patient 2 BEST1 2 c.47C>T p.Ser16Phe Het Mut Positive Patient 3 BEST1 2 c.72G>T p.Trp24Cys Het Mut Positive Patient 4 BEST1 3 c.240C>A p.Phe80Leu Het Mut Positive Patient 5 BEST1 3 c.240C>A p.Phe80Leu Het Mut Positive Patient 6 BEST1 4 c.248G>C p.Gly83Ala Het vAR/us Probably damaging 1 Positive Patient 7 BEST1 4 c.277T>C p.Trp93Arg Het vAR/us Probably damaging 1 Positive Patient 8 BEST1 4 c.279G>C p.Trp93Cys Het Mut Positive Patient 9 BEST1 6 c.652C>T p.Arg218Cys Het Mut Positive Patient 10 BEST1 6 c.652C>T p.Arg218Cys Het Mut Positive Patient 11 BEST1 6 c.680A>G p.Tyr227Cys Het Mut Positive Patient 12 BEST1 6 c.741G>A p.Arg218His Het Mut Positive Patient 13 BEST1 6 c.741G>A p.Arg218His Het Mut Positive Patient 14 BEST1 7 c.727G>A p.Ala243Thr Het Mut Positive Patient 15 BEST1 7 c.727G>A p.Ala243Thr Het Mut Positive Patient 16 BEST1 7 c.728C>T p.Ala243Val Het Mut Positive Patient 17 BEST1 7 c.728C>T p.Ala243Val Het Mut Positive Patient 18 BEST1 8 c.880C>T p.Leu294Phe Het vAR/us Probably damaging 1 Positive Patient 19 BEST1 8 c.887A>G p.Asn296Ser Het Mut Positive Patient 20 BEST1 8 c.903T>G p.Asp301Glu Het Mut Positive Patient 21 BEST1 8 c.903T>G p.Asp301Glu Het Mut Positive Patient 22 BEST1 8 c.910G>A p.Asp304Asn Het Mut Positive Patient 23 BEST1 8 c.925T>C p.Trp309Arg Het vAR/us Probably damaging 1 Positive Patient 24 BEST1 8 c.929T>C p.Ile310Thr Het Mut Positive Patient 25, case 3 BEST1 4 c.250T>G p.Phe84Val Het vAR/us Probably damaging 1 Positive Pattern dystrophy Patient 1 ABCA4 6 c.634C>T p.Arg212Cys Het Mut Positive ABCA4 30 c.4469G>A p.Cys1490Tyr Het Mut Patient 2 ABCA4 17 c.2588G>C p.Gly863Ala Het Mut Unconfirmed Patient 3 ABCA4 IVS26 c.3862&#fe;3A>G Abnormal splicing Het vAR/us Unconfirmed Patient 4 PRPH2 1 c.271T>A p.Tyr91Asn Het vAR/us Probably damaging 0.909 Positive PRPH2 1 c.310-313del(AT) p.Ile104Val Het Mut Patient 5, case 6 PRPH2 1 c.422A>G p.Tyr141Cys Het Mut Positive Patient 6 PRPH2 1 c.422A>G p.Tyr141Cys Het Mut Positive Patient 7 PRPH2 1 c.515G>A p.Arg172Gln Het Mut Positive Patient 8 PRPH2 2 c.583C>T p.Arg195Stop Het Mut Positive Patient 9 PRPH2 2 c.629C>G p.Pro210Arg Het Mut Positive Patient 10 PRPH2 2 c.635G>C p.Ser212Thr Het Mut Positive Patient 11 PRPH2 2 c.683C>T p.Thr228Ile Het Mut Positive Patient 12 PRPH2 2 c.708C>G p.Tyr236Stop Het Mut Positive Patient 13, case 4 PRPH2 IVS2 c.828&#fe;3A>T Splice Het Mut Positive TABLE 2. Continued Patient Gene Exon DNA Change Protein Change Genotype Result PolyPhen Description PolyPhen Score Molecular Diagnosis Patient 14 PRPH2 IVS2 c.828&#fe;3A>T Splice Het Mut Positive Patient 15 PRPH2 IVS2 c.828&#fe;3A>T Splice Het Mut Positive Patient 16 PRPH2 IVS2 c.828&#fe;3A>T Splice Het Mut Positive Patient 17, case 2 ABCA4 IVS38 c.5461-10T>C None Het Mut Unconfirmed Patient 18 PRPH2 2 c.584G>A p.Arg195Gln Het vAR/us Probably damaging 1 Positive Cone-rod dystrophy Patient 1, dominant GUCY2D 13 c.2512C>T p.Arg838Cys Het Mut Positive Patient 2, dominant GUCY2D 13 c.2513G>A p.Arg838His Het Mut Positive Patient 3, dominant GUCY2D 13 c.2513G>A p.Arg838His Het Mut Positive Patient 4, dominant GUCY2D 13 c.2513G>A p.Arg838His Het Mut Positive Patient 5, dominant GUCY2D 13 c.2513G>A p.Arg838His Het Mut Positive CRX 3 c.607T>C p.Ser213Pro Het vAR/us Probably damaging 0.999 Patient 6, recessive ABCA4 2 c.156T>G p.His52Gln Het vAR/us Probably damaging 0.998 Positive ABCA4 3 c.161G>A p.Cys54Tyr Het Mut ABCA4 28 c.4169T>C p.Leu1390Pro Het Mut Patient 7, recessive ABCA4 16 c.2385C>T p.Ser795Arg Het vAR/us Probably damaging 0.99 Positive ABCA4 IVS40 c.5714&#fe;5G>A Splice Het Mut Patient 8, recessive ABCA4 42 c.5882G>A p.Gly1961Glu Het Mut Positive ABCA4 45 c.6221G>T p.Gly2074Val Het vAR/us Probably damaging 1 Patient 9, recessive ABCA4 IVS42 c.5898&#fe;1G<A Splice Het Mut Positive ABCA4 IVS42 c.5899-2delA Splice Het Mut Patient 10, recessive ABCA4 5 c.559C>T p.Arg187Cys Het Mut Positive ABCA4 40 c.5645T>C p.Met1882Thr Het Mut Patient 11, recessive ABCA4 6 c.768G>T p.Val256Val (abnlspl) Het Mut Positive ABCA4 31 c.4577C>T p.Thr1526Met Het Mut Patient 12, recessive ABCA4 12 c.1622T>C p.Leu541Pro Het Mut Positive ABCA4 21 c.3113C>T p.Ala1038Val Het Mut ABCA4 12 c.1622T>C p.Leu541Pro Hom Mut ABCA4 21 c.3113C>T p.Ala1038Val Hom Mut ABCA4 22 c.3322C>T p.Arg1108Cys Het Mut Patient 13, recessive ABCA4 12 c.1622T>C p.Leu541Pro Hom Mut Positive ABCA4 21 c.3113C>T p.Ala1038Val Hom Mut Patient 14, recessive ABCA4 13 c.1927G>A p.Val643Met Het Mut Positive ABCA4 24 c.3602T>G p.Leu1201Arg Het Mut ABCA4 36 c.5186T>C p.Leu1729Pro Het Mut Patient 15, recessive ABCA4 23 c.3364G>A p.Glu1122Lys Het Mut Positive ABCA4 48 c.6529G>A p.Asp2177Asn Het Mut Patient 16, recessive ABCA4 35 c.4918C>T p.Arg1640Trp Het Mut Positive ABCA4 28 c.4222T>C p.Trp1408Arg Het Mut Patient 17, recessive ABCA4 11 c.1532G>A p.Arg511His Het Mut Unconfirmed Patient 18, recessive ABCA4 27 c.3899G>A p.Arg1300Gln Het vAR/us Benign 0.143 Unconfirmed Patient 19, recessive ABCA4 13 c.1933G>A p.Asp645Asn Het Mut Unconfirmed Patient 20, recessive ABCA4 35 c.4918C>T p.Arg1640Trp Het Mut Unconfirmed Patient 21, recessive ABCA4 IVS7 c.859-9T>C Unknown Hom vAR/us NA NA Unconfirmed Molecular Diagnostic Testing by eyeGENE IOVS j September 2014 j Vol. 55 j No. 9 j were screened for the p.Arg838His mutation in GUCY2D, and mutations in the CRX, ELOVL4, PRPH2, and/or ABCA4 genes.
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ABCA4 p.Asp645Asn 25082885:39:5752
status: NEW116 Mutations or Unknown Variants Detected in Patients With Central Vision Loss Gene Exon DNA Change Protein Change Genotype Result PolyPhen Description PolyPhen Score Frequency* Variant ID Late-onset retinal degeneration CTRP5 NA NA NA NA NA NA NA NA NA Sorsby fundus dystrophy TIMP3 1 c.113C>G p.Ser38Cys Het vAR/us Probably damaging 1 2 TIMP3 5 c.610A>T p.Ser204Cys Het Mut 1 CM941325/ rs137853298 Doyne honeycomb dystrophy EFEMP1 9 c.1033C>T p.Arg345Trp Het Mut 2 CM990504 EFEMP1 IVS10 c.IVS10-14C>T None Het vAR/us NA NA 1 Best macular dystrophy BEST1 2 c.28G>A p.Ala10Thr Het Mut 1 CM982017 BEST1 2 c.47C>T p.Ser16Phe Het Mut 1 CM010520 BEST1 2 c.72G>T p.Trp24Cys Het Mut 1 CM982018 BEST1 3 c.240C>A p.Phe80Leu Het Mut 2 CM004423 BEST1 4 c.248G>C p.Gly83Ala Het vAR/us Probably damaging 1 1 BEST1 4 c.277T>C p.Trp93Arg Het vAR/us Probably damaging 1 1 BEST1 4 c.279G>C p.Trp93Cys Het Mut 1 rs28940273/ CM982021 BEST1 6 c.652C>T p.Arg218Cys Het Mut 2 CM982023 BEST1 6 c.680A>G p.Tyr227Cys Het Mut 1 CM982024 BEST1 6 c.741G>A p.Arg218His Het Mut 2 CM003486 BEST1 7 c.727G>A p.Ala243Thr Het Mut 2 CM004434 BEST1 7 c.728C>T p.Ala243Val Het Mut 2 rs28940570/ CM00841 BEST1 8 c.880C>T p.Leu294Phe Het vAR/us Probably damaging 1 1 BEST1 8 c.887A>G p.Asn296Ser Het Mut 1 CM010524 BEST1 8 c.903T>G p.Asp301Glu Het Mut 2 CM991243 BEST1 8 c.910G>A p.Asp304Asn Het Mut 1 CM024219 BEST1 8 c.925T>C p.Trp309Arg Het vAR/us Probably damaging 1 1 BEST1 8 c.929T>C p.Ile310Thr Het Mut 1 CM000843 BEST1 4 c.250T>G p.Phe84Val Het vAR/us Probably damaging 1 1 Pattern dystrophy ABCA4 6 c.634C>T p.Arg212Cys Het Mut 1 rs61750200 ABCA4 17 c.2588G>C p.Gly863Ala Het Mut 1 CM970003/ rs76157638 ABCA4 IVS26 c.3862&#fe;3A>G Abnormal splicing Het vAR/us 1 NA ABCA4 30 c.4469G>A p.Cys1490Tyr Het Mut 1 CM990056/ rs61751402 ABCA4 IVS38 c.5461-10T>C None Het Mut 1 CS057513 PRPH2 1 c.271T>A p.Tyr91Asn Het vAR/us Probably damaging .909 1 PRPH2 1 c.310-313del(AT) p.Ile104Val Het Mut 1 NA/Deletion PRPH2 1 c.422A>G p.Tyr141Cys Het Mut 2 CM010125/ rs61755781 PRPH2 1 c.515G>A p.Arg172Gln Het Mut 1 CM930637/ rs61755792 PRPH2 2 c.583C>T p.Arg195Stop Het Mut 1 CM032999 PRPH2 2 c.629C>G p.Pro210Arg Het Mut 1 CM941210 PRPH2 2 c.635G>C p.Ser212Thr Het Mut 1 CM971289/ rs61755801 PRPH2 2 c.683C>T p.Thr228Ile Het Mut 1 TMP_ESP_6_ 42672248 PRPH2 2 c.708C>G p.Tyr236Stop Het Mut 1 rs61755813 PRPH2 IVS2 c.828&#fe;3A>T Splice Het Mut 4 CS010139 PRPH2 2 c.584G>A p.Arg195Gln Het vAR/us Probably damaging 1 1 TABLE 3. Continued Gene Exon DNA Change Protein Change Genotype Result PolyPhen Description PolyPhen Score Frequency* Variant ID Cone-rod dystrophy ABCA4 2 c.156T>G p.His52Gln Het vAR/us Probably damaging 0.998 1 ABCA4 3 c.161G>A p.Cys54Tyr Het Mut 1 CM990012/ rs150774447 ABCA4 28 c.4169T>C p.Leu1390Pro Het Mut 1 CM014810/ rs61752430 ABCA4 16 c.2385C>T p.Ser795Arg Het vAR/us Probably damaging 0.99 1 ABCA4 IVS40 c.5714&#fe;5G>A Splice Het Mut 1 CS982057 ABCA4 27 c.3899G>A p.Arg1300Gln Het vAR/us Benign 0.143 1 ABCA4 32 c.4661A>G p.Glu1554Gly Het vAR/us Benign 0.326 1 ABCA4 30 c.4383G>A p.Trp1461Stop Het Mut 1 Stop/NA ABCA4 IVS38 c.5461-10T>C None Het Mut NA NA 2 CS057513 ABCA4 22 c.3259G>A p.Glu1087Lys Het Mut 1 CM970008/ rs61751398 ABCA4 42 c.5882G>A p.Gly1961Glu Het Mut 2 CM970016/ rs1800553 ABCA4 45 c.6221G>T p.Gly2074Val Het vAR/us Probably damaging 1 1 ABCA4 IVS42 c.5898&#fe;1G<A Splice Het Mut 1 CS011524 ABCA4 IVS42 c.5899-2delA Splice Het Mut 1 rs3112831 CRX 3 c.607T>C p.Ser213Pro Het vAR/us Probably damaging 0.999 1 ABCA4 5 c.559C>T p.Arg187Cys Het Mut 1 COSM913472 ABCA4 40 c.5645T>C p.Met1882Thr Het Mut 1 rs4147830 ABCA4 6 c.768G>T p.Val256Val (abnlspl) Het Mut 1 CM990057/ rs61750152 ABCA4 31 c.4577C>T p.Thr1526Met Het Mut 1 rs62645944 ABCA4 11 c.1532G>A p.Arg511His Het Mut 1 rs140482171 ABCA4 12 c.1622T>C p.Leu541Pro Het Mut 1 CM990022/ rs61751392 ABCA4 21 c.3113C>T p.Ala1038Val Het Mut 1 CM970006/ rs61751374 ABCA4 12 c.1622T>C p.Leu541Pro Hom Mut 2 CM990022/ rs61751392 ABCA4 21 c.3113C>T p.Ala1038Val Hom Mut 2 CM970006/ rs61751374 ABCA4 22 c.3322C>T p.Arg1108Cys Het Mut 1 CM990039/ rs61750120 ABCA4 13 c.1927G>A p.Val643Met Het Mut 1 CM014293/ rs61749417/ rs143548435 ABCA4 24 c.3602T>G p.Leu1201Arg Het Mut 1 CM990042/ rs61750126 ABCA4 36 c.5186T>C p.Leu1729Pro Het Mut 1 CM990062/ rs61750567 ABCA4 13 c.1933G>A p.Asp645Asn Het Mut 1 rs617494181933 ABCA4 23 c.3364G>A p.Glu1122Lys Het Mut 1 CM990041 ABCA4 48 c.6529G>A p.Asp2177Asn Het Mut 1 CM970023/ rs1800555 ABCA4 35 c.4918C>T p.Arg1640Trp Het Mut 2 CM983728/ rs61751404 ABCA4 28 c.4222T>C p.Trp1408Arg Het Mut 1 CM990048/ rs61750135 GUCY2D 13 c.2512C>T p.Arg838Cys Het Mut 1 rs61750172 GUCY2D 13 c.2513G>A p.Arg838His Het Mut 5 CM012606/ rs61750173 ABCA4 IVS7 c.859-9T>C Unknown Hom vAR/us NA NA 1 ABCA4 42 c.5882G>A p.Gly1961Glu Hom Mut 1 CM970016/ rs1800553 ABCA4 43 c.5917delG Deletion Hom Mut 1 RISN_ABCR: c.5917delG Molecular Diagnostic Testing by eyeGENE IOVS j September 2014 j Vol. 55 j No. 9 j Six patients with late-onset retinal pathology and drusen had well-characterized clinical data.
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ABCA4 p.Asp645Asn 25082885:116:4322
status: NEW