Ichthyosis, Congenital, Autosomal Recessive 4a; Arci4a

Table of contents:

Description
Related genes
Clinical Features
Incidence and onset information
Alternative Names
Researches and researchers
Gene Panels
Sources and references

Description

Autosomal recessive congenital ichthyosis (ARCI) is a heterogeneous group of disorders of keratinization characterized primarily by abnormal skin scaling over the whole body. These disorders are limited to skin, with approximately two-thirds of patients presenting severe symptoms. The main skin phenotypes are lamellar ichthyosis (LI) and nonbullous congenital ichthyosiform erythroderma (NCIE), although phenotypic overlap within the same patient or among patients from the same family can occur (summary by Fischer, 2009). Neither histopathologic findings nor ultrastructural features clearly distinguish between NCIE and LI. In addition, mutations in several genes have been shown to cause both lamellar and nonbullous ichthyosiform erythrodermal phenotypes (Akiyama et al., 2003). At the First Ichthyosis Consensus Conference in Soreze in 2009, the term 'autosomal recessive congenital ichthyosis' (ARCI) was designated to encompass LI, NCIE, and harlequin ichthyosis (ARCI4B ) (Oji et al., 2010).NCIE is characterized by prominent erythroderma and fine white, superficial, semiadherent scales. Most patients present with collodion membrane at birth and have palmoplantar keratoderma, often with painful fissures, digital contractures, and loss of pulp volume. In half of the cases, a nail dystrophy including ridging, subungual hyperkeratosis, or hypoplasia has been described. Ectropion, eclabium, scalp involvement, and loss of eyebrows and lashes seem to be more frequent in NCIE than in lamellar ichthyosis (summary by Fischer et al., 2000). In LI, the scales are large, adherent, dark, and pigmented with no skin erythema. Overlapping phenotypes may depend on the age of the patient and the region of the body. The terminal differentiation of the epidermis is perturbed in both forms, leading to a reduced barrier function and defects of lipid composition in the stratum corneum (summary by Lefevre et al., 2006).In later life, the skin in ARCI may have scales that cover the entire body surface, including the flexural folds, and the scales are highly variable in size and color. Erythema may be very mild and almost invisible. Some affected persons exhibit scarring alopecia, and many have secondary anhidrosis (summary by Eckl et al., 2005).For a general phenotypic description and discussion of genetic heterogeneity of autosomal recessive congenital ichthyosis, see ARCI1 (OMIM ).

Genes related to Ichthyosis, Congenital, Autosomal Recessive 4a; Arci4a

ABCA12

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Clinical Features

Top most frequent phenotypes and symptoms related to Ichthyosis, Congenital, Autosomal Recessive 4a; Arci4a

Flexion contracture
Alopecia
Hyperkeratosis
Hepatosplenomegaly
Abnormality of the nervous system
Erythema
Scarring
Spastic paraplegia
Nail dystrophy
Paraplegia

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Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
— No data available about the known clinical features onset.

Alternative names

Ichthyosis, Congenital, Autosomal Recessive 4a; Arci4a Is also known as ichthyosis, lamellar, 2, formerly, ichthyosis congenita iib, li2, formerly, icr2b.

Researches and researchers

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Ichthyosis, Congenital, Autosomal Recessive 4a; Arci4a Recommended genes panels

Panel Name, Specifity and genes Tested/covered
MitoMet®Plus aCGH Analysis. By Baylor Miraca Genetics Laboratories (United States). RGS9, RHO, GRK1, RLBP1, RNASEL, BCS1L, RP1, RP2, RP9, RPE65, RPGR, RPL35A, MRPL3, RPS14, RS1, SAG, SARDH, SCO2, SCP2, SDHB , (...) View the complete list with 612 more genes Panel complete gene list RGS9, RHO, GRK1, RLBP1, RNASEL, BCS1L, RP1, RP2, RP9, RPE65, RPGR, RPL35A, MRPL3, RPS14, RS1, SAG, SARDH, SCO2, SCP2, SDHB, SDHC, SEMA4A, SGSH, SHH, SIX6, FOXL2, SLC16A1, SLC22A4, SLC22A5, SLC24A1, SLC25A12, SLC25A13, SLC25A15, SLC25A3, SLC25A4, BRCA1, SLC34A1, SLC35A1, SLC3A1, SLC9A3R1, SLC9A6, SMPD1, SNCB, SOD1, SOD2, SOX2, BTD, SPG7, SPR, SPTLC2, SQSTM1, STAR, STAT1, STAT3, STXBP1, SUCLA2, SUCLG1, SUOX, SURF1, TAT, TAZ, TWNK, HNF1A, HNF1B, ZEB1, TCIRG1, TCN2, TEAD1, TGFB1, TGFBI, ACO2, TIMM8A, TIMP3, TK2, TLR3, TLR4, ACOX1, TNFRSF11A, TNFRSF11B, TNFSF11, TP53, TSFM, TUFM, TULP1, TYR, TYROBP, TYRP1, UBE3A, UCP1, UCP2, UCP3, UNG, UQCRB, USH1C, USH2A, CLRN1, VCP, VHL, BEST1, VSX1, WFS1, WT1, WWOX, XDH, ARL6, LPIN1, RPGRIP1, CA2, CDH23, CA4, SOST, GFM1, CABP4, CACNA1F, MRPS16, ELAC2, SLC25A20, C1QTNF5, HTRA2, SLC25A19, ELOVL4, MRPS22, CDHR1, PINK1, AMN, ABCA12, FYCO1, PCDH15, CASP8, CAT, PRPF31, ANKH, CBS, PUS1, HPS3, KLHL7, ALG9, LRPPRC, HPS4, PRPF6, ABHD12, PANK2, NDUFAF5, RP1L1, APTX, COX4I2, NFU1, USH1G, WHRN, PARK7, TRIM32, LIAS, SLC45A2, KIF1B, MCEE, COQ8A, MFN2, HAX1, HPS5, OPTN, NDUFA13, RIMS1, RRM2B, SP7, DTNBP1, PRPF8, AASS, ADGRV1, SARS2, PDSS1, NT5C3A, INVS, NAGS, MFRP, FKBP10, ALG1, IMPG2, ATP6V0A2, COG7, COG8, RAX, BBS7, ATPAF2, HPS6, NDUFAF1, MMAA, NPHP4, CHAT, MTO1, P3H1, MMAB, KIF21A, ALG12, CHM, RD3, KCNV2, SLC25A22, RDH12, CYCS, TTC8, GLRX5, GPR143, SLC35C1, CACNA2D4, COQ6, CLCN7, NUBPL, NDUFA11, SPATA7, L2HGDH, DHDDS, TPP1, CLN3, TUBA1A, TUBB3, SLC39A13, BCOR, BLOC1S3, AARS2, NDUFAF4, PITPNM3, ABHD5, RARS2, INPP5E, CNGA1, ACAD9, CNGA3, CNGB1, DIABLO, CNGB3, EYS, ADAM9, TSPAN12, OSTM1, TOPORS, CERKL, AGK, COL1A2, COL3A1, COL5A1, COL5A2, FAM20C, COX15, COX6B1, ABAT, LMBRD1, PDSS2, ALG3, ALG6, ALG2, ALG8, CYP4V2, CPOX, CPT1A, ETHE1, CPT2, CRB1, GNE, CRTAP, CRX, CRYAB, NDUFA12, CISD2, GLYCTK, YARS2, BOLA3, DMGDH, MMACHC, FLVCR1, MMADHC, COQ2, CCDC39, CTSD, COQ9, CTSK, TMEM126A, CUBN, TRMU, MTPAP, DARS2, CYB5A, CYBA, REEP1, FAM161A, SRD5A3, CYP11A1, CYP11B1, CYP11B2, CYP17A1, CYP1B1, TTC19, CYP24A1, SDHAF2, TMEM127, CYP27A1, TMEM70, SLC25A38, CYP27B1, PDZD7, BBS10, ZNF513, HGSNAT, BBS12, C12orf65, AMER1, FOXRED1, DBT, C8orf37, DDOST, ACSF3, MSRB3, XPNPEP3, NDUFAF2, CCDC28B, COX14, D2HGDH, TMEM67, DGUOK, NDUFAF6, DHODH, CYB5R3, LEMD3, IQCB1, DLAT, DLD, CEP290, ADSL, FASTKD2, ANKRD26, CC2D2A, UQCRQ, GNPTAB, DNM1L, ISCU, NDUFAF3, BBS9, PPARGC1B, DPM1, DPM3, RFT1, TUSC3, RILP, DSP, DNAJC19, STRA6, PNPLA2, SNRNP200, SECISBP2, TYMP, AFG3L2, LCA5, AGL, EFEMP1, PRCD, AGPS, ELN, ENO3, SDHAF1, ABCA4, AGXT, PCARE, ETFA, ETFB, ETFDH, EYA1, EYA4, ACSL4, FAH, AIPL1, FBLN5, FBN1, FBP1, AK1, AK2, FECH, AKAP10, FH, ATP8B1, FOXC1, FXN, FSCN2, ALAS2, ALDH3A2, FZD4, G6PC, ALDH4A1, SLC37A4, GAA, ALDH5A1, GAD1, GALC, GALE, GALK1, GALNS, GALT, GAMT, ALDOA, GARS, ALDOB, GATM, GBE1, GCDH, GCK, GCKR, ABCB11, OPN1MW, GCSH, GFER, CBLIF, GJA3, ALMS1, GK, GLB1, TAP1, GLDC, GLUD1, GM2A, GNAT1, GNAT2, GNS, GOT1, GPD1, GPD2, GPI, ABCB4, AMACR, GPX1, GRM6, GRN, GSN, GUCA1A, GUCA1B, GUCY2D, GUSB, ABCB6, GYS1, GYS2, AMT, ABCB7, HSD17B10, HADHA, HADHB, HAGH, HARS, HBB, HCCS, HESX1, HEXA, HEXB, HIBCH, HK1, HLCS, HMGCL, HMGCS2, HP, HPRT1, HPS1, HSD17B4, HSD3B2, HSPD1, IDH2, IDH3B, AP3B1, IMPDH1, ABCD1, IVD, JAG1, APP, KARS, KCNJ13, KRT12, KRT3, KRT5, LDHA, LDHB, COG1, ARG1, LMX1B, LRAT, LRP5, MAN2B1, MANBA, MAOA, PHOX2A, MC1R, MCCC1, MCCC2, ME2, MECP2, MEF2A, MEN1, MERTK, MGAT2, MKKS, MKS1, TRPM1, MLYCD, ALDH6A1, MOCS1, MOCS2, MPDU1, MPI, MPV17, SEPT9, MTHFR, ASL, MTR, MTRR, MMUT, MUTYH, ASS1, MYO7A, MYOC, NAGLU, NCOA4, NDP, NDUFA1, NDUFA10, NDUFA2, NDUFA9, NDUFB3, NDUFS1, NDUFS2, NDUFS3, NDUFS4, NDUFS6, NDUFS7, NDUFS8, NDUFV1, NDUFV2, NEFH, NEUROD1, ZFHX3, NHS, NME1, NPHP1, NPHP3, ATIC, NRL, FRMD7, NYX, OAT, OCA2, OCRL, OGDH, OGG1, OPA1, OPA3, ATP5F1E, ACACA, OTC, OTX2, OXCT1, PAH, PRKN, PAX2, PAX6, PC, PCCA, PCCB, ATP7A, ACAD8, ATP7B, PCK2, AIFM1, ALDH7A1, PDE6A, PDE6B, PDE6C, PDE6G, PDHA1, PDHB, SLC26A4, SERPINF1, PFKM, PGAM2, ACADM, AUH, PGM1, PHB, PHKA1, PHKA2, PHKB, PHKG2, PHYH, ACADS, PITX2, PITX3, PLA2G2A, PLOD2, PLOD3, ACADSB, PMM2, PNKD, POLG, POLG2, ACADVL, PPARG, B4GALT1, CTSA, PPIB, PDP1, PPOX, ACAT1, B4GALT7, PPP2R1B, ACAT2, PRKCG, PRODH, PROM1, PSAP, PSEN1, BBS1, BBS2, CAVIN1, PTS, BBS4, BBS5, PYCR1, ALDH18A1, PYGL, PYGM, QDPR, RAF1, BCKDHA, BCKDHB, RB1, OPN1LW, RDH5, PRPH2, RET, RGR Specificity 1 % Genes 100 %
ABCA12. By Institute for Human Genetics University Clinic Freiburg (Germany). ABCA12 Specificity 100 % Genes 100 %
ABCA12 Gene Sequencing. By GeneDx (United States). ABCA12 Specificity 100 % Genes 100 %
ABCA12 Select Exon Sequencing. By GeneDx (United States). ABCA12 Specificity 100 % Genes 100 %
ABCA12. Complete sequencing. By Instituto de Medicina Genomica Instituto de Medicina Genomica (Spain). ABCA12 Specificity 100 % Genes 100 %
ABCA12. Complete sequencing. By Instituto de Medicina Genomica Instituto de Medicina Genomica (Spain). ABCA12 Specificity 100 % Genes 100 %
TGM1, ALOX12B, ALOXE3, ABCA12. NextGeneDx. Complete sequencing by NGS. By Instituto de Medicina Genomica Instituto de Medicina Genomica (Spain). ALOXE3, ABCA12, ALOX12B Specificity 34 % Genes 100 %
Ichthyosis, AR 4B (harlequin) (sequence analysis of ABCA12 gene). By CGC Genetics (Portugal). ABCA12 Specificity 100 % Genes 100 %

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Sources and references

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