ABCA3 p.Leu303Val
| Predicted by SNAP2: | A: D (59%), C: N (57%), D: D (80%), E: D (63%), F: N (61%), G: D (75%), H: D (53%), I: N (87%), K: D (63%), M: N (87%), N: D (66%), P: D (71%), Q: N (53%), R: D (66%), S: D (63%), T: N (53%), V: N (78%), W: D (66%), Y: N (57%), |
| Predicted by PROVEAN: | A: D, C: D, D: D, E: D, F: N, G: D, H: D, I: N, K: D, M: N, N: D, P: D, Q: D, R: D, S: D, T: D, V: N, W: D, Y: D, |
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[hide] Molecular and cellular characteristics of ABCA3 mu... Hum Mol Genet. 2012 Feb 15;21(4):765-75. Epub 2011 Nov 7. Flamein F, Riffault L, Muselet-Charlier C, Pernelle J, Feldmann D, Jonard L, Durand-Schneider AM, Coulomb A, Maurice M, Nogee LM, Inagaki N, Amselem S, Dubus JC, Rigourd V, Bremont F, Marguet C, Brouard J, de Blic J, Clement A, Epaud R, Guillot L
Molecular and cellular characteristics of ABCA3 mutations associated with diffuse parenchymal lung diseases in children.
Hum Mol Genet. 2012 Feb 15;21(4):765-75. Epub 2011 Nov 7., [PMID:22068586]
Abstract [show]
ABCA3 (ATP-binding cassette subfamily A, member 3) is expressed in the lamellar bodies of alveolar type II cells and is crucial to pulmonary surfactant storage and homeostasis. ABCA3 gene mutations have been associated with neonatal respiratory distress (NRD) and pediatric interstitial lung disease (ILD). The objective of this study was to look for ABCA3 gene mutations in patients with severe NRD and/or ILD. The 30 ABCA3 coding exons were screened in 47 patients with severe NRD and/or ILD. ABCA3 mutations were identified in 10 out of 47 patients, including 2 homozygous, 5 compound heterozygous and 3 heterozygous patients. SP-B and SP-C expression patterns varied across patients. Among patients with ABCA3 mutations, five died shortly after birth and five developed ILD (including one without NRD). Functional studies of p.D253H and p.T1173R mutations revealed that p.D253H and p.T1173R induced abnormal lamellar bodies. Additionally, p.T1173R increased IL-8 secretion in vitro. In conclusion, we identified new ABCA3 mutations in patients with life-threatening NRD and/or ILD. Two mutations associated with ILD acted via different pathophysiological mechanisms despite similar clinical phenotypes.
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No. Sentence Comment
54 Genetic analysis results in the 10 children harboring homozygous and compound heterozygous (shaded) or heterozygous ABCA3 mutations Patient NRD Clinical outcome ABCA3 mutation ABCA3 SNPs ABCA3 variants cDNA level Protein level dbSNPs rs# cluster id Missense variants in conserved amino acid 1 Yes ILD c.[3518C.G] + [3518C.G] p.[T1173R] + [T1173R] rs149532, rs13332514 2 Yes ILD c.[757G.C] + [757G.C] p.[D253H] + [D253H] 3 Yes Death c.[1385T.G] + [2890G.A] p.[L462R] + [G964S] rs149532 4 Yes Death c.[4747C.T] + c.[384delC] p.[R1583W] + p.[S128Rfs] rs149532 c.[450G.A] (het) 5 No Death c.[629G.T] + [3079G.C] p.[G210V] + [A1027P] rs149532 6 Yes ILD c.[622C.T] + [4561C.T] p.[R208W] + [R1521W] rs149532, rs323043 7 Yes Death c.[604G.C] + [907C.G] p.[G202R] + [L303V] rs149532, rs323043 (het), rs13332514 8 Yes Death c.[2888A.G] + [?]
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ABCA3 p.Leu303Val 22068586:54:758
status: NEW79 BALF analysis Western blot analysis of surfactant proteins (Fig. 4) was performed in seven patients, who had the following ABCA3 mutations: p.D253H (patient 2), p.T1173R (patient 1), p.L462R/ p.G964S (patient 3), p.G202R/p.L303V (patient 7), p.Y963C (patient 8), p.R1583W/p.S128Rfs (patient 4) and p.S872G (patient 10), respectively.
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ABCA3 p.Leu303Val 22068586:79:223
status: NEW80 SP-C (Fig. 4A) and SP-B (Fig. 4B) were detected at a size of 3.7 and 8 kDa in variable amounts, the smallest amount being found in the patient with the p.G202R/p.L303V ABCA3 mutation (patient 7) in whom SP-C and SP-B are only faintly visible.
X
ABCA3 p.Leu303Val 22068586:80:162
status: NEW56 Genetic analysis results in the 10 children harboring homozygous and compound heterozygous (shaded) or heterozygous ABCA3 mutations Patient NRD Clinical outcome ABCA3 mutation ABCA3 SNPs ABCA3 variants cDNA level Protein level dbSNPs rs# cluster id Missense variants in conserved amino acid 1 Yes ILD c.[3518C.G] + [3518C.G] p.[T1173R] + [T1173R] rs149532, rs13332514 2 Yes ILD c.[757G.C] + [757G.C] p.[D253H] + [D253H] 3 Yes Death c.[1385T.G] + [2890G.A] p.[L462R] + [G964S] rs149532 4 Yes Death c.[4747C.T] + c.[384delC] p.[R1583W] + p.[S128Rfs] rs149532 c.[450G.A] (het) 5 No Death c.[629G.T] + [3079G.C] p.[G210V] + [A1027P] rs149532 6 Yes ILD c.[622C.T] + [4561C.T] p.[R208W] + [R1521W] rs149532, rs323043 7 Yes Death c.[604G.C] + [907C.G] p.[G202R] + [L303V] rs149532, rs323043 (het), rs13332514 8 Yes Death c.[2888A.G] + [?]
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ABCA3 p.Leu303Val 22068586:56:758
status: NEW81 BALF analysis Western blot analysis of surfactant proteins (Fig. 4) was performed in seven patients, who had the following ABCA3 mutations: p.D253H (patient 2), p.T1173R (patient 1), p.L462R/ p.G964S (patient 3), p.G202R/p.L303V (patient 7), p.Y963C (patient 8), p.R1583W/p.S128Rfs (patient 4) and p.S872G (patient 10), respectively.
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ABCA3 p.Leu303Val 22068586:81:223
status: NEW82 SP-C (Fig. 4A) and SP-B (Fig. 4B) were detected at a size of 3.7 and 8 kDa in variable amounts, the smallest amount being found in the patient with the p.G202R/p.L303V ABCA3 mutation (patient 7) in whom SP-C and SP-B are only faintly visible.
X
ABCA3 p.Leu303Val 22068586:82:162
status: NEW