ABCB11 p.Cys107Arg
| Reviews: |
p.Cys107Arg
D
|
| Predicted by SNAP2: | A: N (57%), D: D (71%), E: D (66%), F: N (53%), G: D (63%), H: D (63%), I: D (59%), K: D (66%), L: D (59%), M: D (63%), N: N (53%), P: D (66%), Q: D (63%), R: D (59%), S: N (61%), T: N (57%), V: D (53%), W: D (80%), Y: D (53%), |
| Predicted by PROVEAN: | A: N, D: D, E: D, F: D, G: N, H: D, I: N, K: D, L: D, M: N, N: N, P: D, Q: D, R: D, S: N, T: N, V: N, W: D, Y: D, |
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[hide] ABCB11 gene mutations in Chinese children with pro... Liver Int. 2010 Jul;30(6):809-15. Epub 2009 Oct 21. Liu LY, Wang ZL, Wang XH, Zhu QR, Wang JS
ABCB11 gene mutations in Chinese children with progressive intrahepatic cholestasis and low gamma glutamyltransferase.
Liver Int. 2010 Jul;30(6):809-15. Epub 2009 Oct 21., [PMID:19845854]
Abstract [show]
BACKGROUND: Progressive familial intrahepatic cholestasis type 2 (PFIC2) is a severe autosomal recessive liver disorder of childhood that can cause cholestasis and progress to end-stage liver disease. ABCB11 gene mutations causing PFIC2 have been reported in some population groups, but not in mainland Chinese. AIMS: To elucidate the existence of and characterize ABCB11 gene mutations in mainland Chinese with progressive intrahepatic cholestasis and low gamma glutamyltransferase (GGT). METHODS: Twenty-four children presenting with progressive intrahepatic cholestasis and low GGT were admitted to a tertiary paediatric hospital in eastern China from January 2004 to July 2007. All encoding exons and flanking areas of the ABCB11 gene were sequenced. Hepatic histopathology results were obtained by review of the medical record. RESULTS: Twelve novel mutations of ABCB11 gene were found in seven patients: three nonsense mutations, six missense mutations, two splicing mutations and one intronic mutation. Giant cell transformation of hepatocytes was demonstrated in all the four patients with ABCB11 mutations and four of 12 patients without mutations in coding sequences of ABCB11 gene who received liver needle biopsy. CONCLUSIONS: ABCB11 gene mutations play an important role in Chinese patients with progressive intrahepatic cholestasis and low GGT. The characteristics of ABCB11 gene mutations in Chinese are different from other population groups. Histological examination may be helpful in diagnosis of PFIC2.
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No. Sentence Comment
54 ESE Finder showed that missense mutation 319T 4C (C107R) induced the introduction of a splicing factor at the SRp55 binding site; 499G 4 A (A167T) resulted in an enhanced SF2/ASF binding site (score 2.60677 vs. 3.05400); and 1496G 4 A (G499E) led to a branch site appearing in exon 14.
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ABCB11 p.Cys107Arg 19845854:54:50
status: NEW73 Ageat onset/sexSymptoms Ageat follow-upOutcomePathologicalfeaturesNucleotidechangeDeducedeffectMutationorigin 23d/MPersistentjaundice, pruritus,gallstone 6yAliveHepatocellularcholestasis, portalfibrosis Homozygous499G4AHomozygousA167TBothparentswerecarriers 350d/FPersistentjaundice, hepaticfailure 9mDeathNAHeterozygous2104C4THeterozygousQ702XNA 52d/MJaundice,pruritus5yLostfollow-upHepatocellularcholestasis, giantcelltransformation, portalfibrosis Compoundheterozygous 562G4T/IVS2213A4G/ IVS4-74A4T Compoundheterozygous G188W/splicingdefect NA 113m/FPersistentjaundice, pruritus 1.5yAliveHepatocellularcholestasis, giantcelltransformation Compoundheterozygous 1496G4A/2606A4C Compoundheterozygous G499E/Q869P G499Ewaspaternal,Q869P wasmaternal 142m/MJaundice,failureto thrive 14mLostfollowupNACompoundheterozygous 1605C4TÃ/IVS25-6C4G Compoundheterozygous A535AÃ/splicingdefect A535Awasmaternal, IVS25-6C4Gwaspaternal 15Birth/MProgressivejaundice, pruritus 2.5yLostfollow-upCholestasis,giantcell transformation,portal fibrosis Compoundheterozygous 319T4C/3172C4T Compoundheterozygous C107R/Q1058X C107Rwasmaternal, Q1058Xwaspaternal 20Birth/MProgressivejaundice15mLostfollow-upCholestasis,giantcell transformation,early cirrhosis Compoundheterozygous 1243C4T/3875G4T Compoundheterozygous R415X/G1292V R415Xwaspaternal, G1292Vwasmaternal Ã1605C4T(A535A):anuncommonSNP,reducingthelevelsofBSEPexpression(19).
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ABCB11 p.Cys107Arg 19845854:73:1096
status: NEW[hide] PFIC2 and ethnicity-specific bile salt export pump... Liver Int. 2010 Jul;30(6):777-9. Epub 2010 Mar 8. Ananthanarayanan M, Li Y
PFIC2 and ethnicity-specific bile salt export pump (BSEP, ABCB11) mutations: where do we go from here?
Liver Int. 2010 Jul;30(6):777-9. Epub 2010 Mar 8., [PMID:20214736]
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No. Sentence Comment
42 Mutation C107R affects the first intracellular loop, only one of two that so far have been reported for this BSEP domain.
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ABCB11 p.Cys107Arg 20214736:42:9
status: NEW[hide] Morphologic findings in progressive familial intra... Am J Surg Pathol. 2011 May;35(5):687-96. Evason K, Bove KE, Finegold MJ, Knisely AS, Rhee S, Rosenthal P, Miethke AG, Karpen SJ, Ferrell LD, Kim GE
Morphologic findings in progressive familial intrahepatic cholestasis 2 (PFIC2): correlation with genetic and immunohistochemical studies.
Am J Surg Pathol. 2011 May;35(5):687-96., [PMID:21490445]
Abstract [show]
Progressive familial intrahepatic cholestasis, type 2 (PFIC2), characterized by cholestasis in infancy that may progress to cirrhosis, is caused by mutation in ABCB11, which encodes bile salt export pump (BSEP). We correlated histopathologic, immunohistochemical, and ultrastructural features in PFIC2 with specific mutations and clinical course. Twelve patients with clinical PFIC2 and ABCB11 mutations were identified, and 22 liver biopsy and explant specimens were assessed. All had hepatocellular cholestasis; most had canalicular bile plugs. At least 1 specimen from every patient had centrizonal/sinusoidal fibrosis, often with periportal fibrosis. Neonatal hepatitis-like features (inflammation, giant cells, necrosis) varied. In 2 of the 5 patients with paired specimens obtained >6 months apart, lobular and portal fibrosis worsened. Transmission electron microscopy (EM) in all 9 patients studied showed canalicular dilatation, microvilli loss, abnormal mitochondrial internal structure, and varying intracanalicular accumulation of finely granular bile. Canalicular staining for BSEP was absent in 10 patients and present in 2 patients, 1 of whom had intermittent symptoms. ABCB11 sequencing of all patients identified 6 novel and 10 previously described mutations, with nonsense, missense, and/or noncoding mutations in the 10 patients without immunohistochemically demonstrable BSEP. Missense and/or noncoding mutations were identified in the 2 patients with demonstrable BSEP, whose clinical course was more indolent. Mutations ending ABCB11 transcription appear linked, through hepatocellular necrosis and fibrosis, to worse outcome. In conclusion, light microscopy and electron microscopy findings in clinical PFIC2 can support diagnosis, but are variable and nonspecific. Therefore, no correlation between specific mutations and histopathology is yet possible.
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No. Sentence Comment
143 Immunohistochemical Findings and Genetic Abnormalities Patient BSEP Mutation Type of Mutation(s) 1 Absent c.890A>G (p.E297G)* Missense5,7,10,13,16,19,20 2 Absent c.1723C>T (p.R575X) Nonsense7,19,20 c.2178+1G>T Noncoding region20 3 Present c.1708G>A (p.A570T) Missense20 c.3634G>T (p.V1212F) Missense, predicted deleterious 4 Absent c.3164T>C (p.L1055P)* Missense, predicted deleterious 5 Absent c.3692G>A (p.R1231Q) Missense20 c.2296G>A (p.G766R) Missense20 6 Absent c.2782C>T (p.R928X) Nonsense13 c.3268C>T (p.R1090X) Nonsense5,7,13 7 Present c.3347G>A (p.G1116E) Missense, predicted deleterious IVS 23-8 G-A Noncoding region 8 Absent IVS 16-8 T>Gw Noncoding region10 9 Absent c.2944G>A (p.G982R) Missense5,7,19,20 c.2296G>A (p.G766R) Missense20 10 Absent c.2944G>A (p.G982R) Missense5,7,19,20 c.2296G>A (p.G766R) Missense20 11 Absent c.319T>C (p.C107R) Missense, predicted deleterious c.611+4A>G Noncoding region 12 Absent c.1723C>T (p.R575X) Nonsense7,19,20 c.2178+1G>T Noncoding region20 *Homozygous.
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ABCB11 p.Cys107Arg 21490445:143:848
status: NEW[hide] The bile salt export pump (BSEP) in health and dis... Clin Res Hepatol Gastroenterol. 2012 Dec;36(6):536-53. doi: 10.1016/j.clinre.2012.06.006. Epub 2012 Jul 12. Kubitz R, Droge C, Stindt J, Weissenberger K, Haussinger D
The bile salt export pump (BSEP) in health and disease.
Clin Res Hepatol Gastroenterol. 2012 Dec;36(6):536-53. doi: 10.1016/j.clinre.2012.06.006. Epub 2012 Jul 12., [PMID:22795478]
Abstract [show]
The bile salt export pump (BSEP) is the major transporter for the secretion of bile acids from hepatocytes into bile in humans. Mutations of BSEP are associated with cholestatic liver diseases of varying severity including progressive familial intrahepatic cholestasis type 2 (PFIC-2), benign recurrent intrahepatic cholestasis type 2 (BRIC-2) and genetic polymorphisms are linked to intrahepatic cholestasis of pregnancy (ICP) and drug-induced liver injury (DILI). Detailed analysis of these diseases has considerably increased our knowledge about physiology and pathophysiology of bile secretion in humans. This review focuses on expression, localization, and function, short- and long-term regulation of BSEP as well as diseases association and treatment options for BSEP-associated diseases.
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No. Sentence Comment
185 PFIC BRIC/NFC ICP Other liver diseases Genetic variants without disease association Missense mutations M1V C336S D549V L1055P E135K E137K T87R V43I S701P G19R W342G G556R C1083Y E137K L198P M123T S56L L712L L50S A382G G562D A1110E E186G E297G S194P Q121K A865D M62K R387H A570T S1114R L198P R415Q L198P R128H A865G C68Y A390P L581F G1116E E297G V444A G260D I206V S874P C107R G410D A588V G1116F G374S D482G E297K V284A I939M I112T L413W S593R G1116R A390P N591S V444A G295C R958Q W114R I420T I627T S1120N R432T T655I T510T G295R F959C Y157C D440E E636G R1128C V444A T655I G295S F959V A167T G455E R698C S1144R I498T D676Y R299K T965S A167V K461E S699P R1153C A570T P710P R303K F971L I182K T463I E709K R1153H T586I L827I L339V F971Y M183T Q466K G758R S1154P G648V G855R H423R L1006F M183V R470Q G766R N1173D T655I E1186K V444A N1009H G188W Y472C Y818F T1210P T923P V444D K1145N M217R V481E R832C N1211D A926P V444G I1183T R223C D482G R832H V1212F R948C A459V S226L R487H T859R R1231Q G1004D I468I G238V R487P A865V R1231W R1050C R487L T242I N490D Q869P L1242I G1116R Q546K A257G I498T G877R D1243G R1128H Q558H V284L G499E S901R R1268Q L1197G E592Q E297G I512T R948C A1283V R1231Q V597M R303G N515T N979D G1292V R616G R303K R517H G982R G1298R T619A Q312H F540L G1004D M677L R313S I541L T1029K M677V G327E I541T G1032R R696Q W330R F548Y A1044P R698H Nonsense mutations (premature stop-codons) S25X Y472X Y772X R1090X E96X W493X Q791X V1147X W330X R520X R928X Q1215X Y354X I528X Y1041X R1235X R415X R575X R1057X E1302X R470X Q702X Q1058X Table 1 (Continued) PFIC BRIC/NFC ICP Other liver diseases Genetic variants without disease association Splice site mutations 76 + 3G > T 908 + 1delG 2178 + 1G > T 3057-2A > G Q159Q 77-1G > C 908 + 1G > T 2179-2A > G 3213 + 1delG Q361Q 99-1G > T 908 + 1G > A 2343 + 1G > T 3213 + 4A > G 150 + 3A > C 1435-13 -8del 2343 + 2T > C 3213 + 5G > A 390-1G > A 2012-8T > G 2611-2A > T 611 + 1G > A 2178 + 1G > A R1001R Deletions/insertions/frame shifts Q101Dfs8X L380Wfs18X G648Vfs5X Q1058Hfs38X F959Hfs1X T127Hfs6X A382 A388del K700Sfs12X I1061Vfs34X F959Gfs48X N199Ifs14X P456Pfs24X T919del L1165del L232Cfs9X H484Rfs5X K930Efs92X A1192Efs50X R303Sfs17X I528Sfs21X K930Efs79X T1256Tfs40X V368Rfs27X I610Qfs45X K969 K972del Synonymous variants without disease association R33R F90F L232L I416I G557G I876I A1028A K1145K D36D I134I Y269Y G418G V597V G937G K1070K R52R S136S Q312Q F427F A804A Y981Y T1086T D58D V195V G319G E395E A535A G817G G1004G A1110A The overview shows ࣈ 290 known variants of BSEP on the protein level, except splice site mutations, which are shown on cDNA level.
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ABCB11 p.Cys107Arg 22795478:185:369
status: NEW