Opitz Gbbb Syndrome, Type Ii; Gbbb2

Description

Features of the Opitz GBBB syndrome include hypertelorism or telecanthus; laryngotracheoesophageal cleft; clefts of lip, palate, and uvula; swallowing difficulty and hoarse cry; genitourinary defects, especially hypospadias in males and splayed labia majora in females; mental retardation; developmental delay; and congenital heart defects.The Opitz GBBB syndrome was earlier thought to be 2 separate X-linked syndromes called the G syndrome and the BBB syndrome; both were listed in the X-linked catalog as recently as the seventh edition of MIM (1986).The Opitz GBBB syndrome is genetically heterogeneous, with both autosomal dominant and X-linked (OMIM ) forms. Robin et al. (1996) compared the phenotypic features of the X-linked and autosomal forms. They found that anteverted nares and posterior pharyngeal cleft were seen only in the X-linked form. However, all other manifestations of the syndrome, such as hypertelorism, swallowing difficulties, hypospadias, and developmental delay, were seen in both forms.

Clinical Features

Top most frequent phenotypes and symptoms related to Opitz Gbbb Syndrome, Type Ii; Gbbb2

  • Intellectual disability
  • Global developmental delay
  • Generalized hypotonia
  • Hearing impairment
  • Hypertelorism
  • Micrognathia
  • Strabismus
  • Abnormal facial shape
  • Muscular hypotonia
  • Cleft palate

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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

Opitz Gbbb Syndrome, Type Ii; Gbbb2 Is also known as opitz bbbg syndrome, gbbb syndrome, hypospadias-dysphagia syndrome, hypertelorism-hypospadias syndrome, opitz-g syndrome, type ii, telecanthus-hypospadias syndrome, g syndrome, opitz oculogenitolaryngeal syndrome, type ii, ogs2, opitz-frias syndrome, opitz gbbb syn.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.


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Opitz Gbbb Syndrome, Type Ii; Gbbb2 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Abnormal/Ambiguous Genitalia Sequencing Panel.

By Genetic Services Laboratory University of Chicago (United States).

ROR2, SALL1, BMP4, SEMA3A, SOX9, SRD5A2, SRY, STAR, TBX15, CEP41, TSPYL1, WNT4, WNT7A, WT1, SETBP1, ZFPM2, UBR1, FIG4, IL17RD, CDKN1C , (...)

View the complete list with 52 more genes
Specificity
2 %
Genes
100 %
Hypospadias Sequencing Panel.

By Genetic Services Laboratory University of Chicago (United States).

SALL1, BMP4, SOX2, SRD5A2, HNF1B, MED12, WNT7A, WT1, FBXL4, ZEB2, SETBP1, TP63, PCNT, UBR1, FIG4, CDKN1C, ARX, GRIP1, FRAS1, EVC2 , (...)

View the complete list with 41 more genes
Specificity
2 %
Genes
100 %
Craniosynostosis Sequence Analysis.

By Division of Genomic Diagnostics The Children's Hospital of Philadelphia (United States).

RUNX2, SKI, TCF12, TWIST1, ZIC1, IFT122, RAB23, CD96, SPECC1L, WDR35, IFT43, EFNB1, MEGF8, ERF, MSX2, POR, RECQL4
Specificity
6 %
Genes
100 %
Craniofacial Del/Dup Panel.

By Division of Genomic Diagnostics The Children's Hospital of Philadelphia (United States).

RUNX2, SALL1, SF3B4, SIX1, SIX5, SKI, SNRPB, TCF12, TCOF1, TWIST1, ZIC1, IFT122, RAB23, ALX1, CD96, POLR1A, WDR19, EVC2, POLR1C, POLR1D , (...)

View the complete list with 22 more genes
Specificity
3 %
Genes
100 %
Craniosynostosis Del/Dup Panel.

By Division of Genomic Diagnostics The Children's Hospital of Philadelphia (United States).

RUNX2, SKI, TCF12, TWIST1, ZIC1, IFT122, RAB23, CD96, SPECC1L, WDR35, IFT43, EFNB1, MEGF8, ERF, MSX2, POR, RECQL4
Specificity
6 %
Genes
100 %
Craniosynostosis Seq + Del/Dup Panel.

By Division of Genomic Diagnostics The Children's Hospital of Philadelphia (United States).

RUNX2, SKI, TCF12, TWIST1, ZIC1, IFT122, RAB23, CD96, SPECC1L, WDR35, IFT43, EFNB1, MEGF8, ERF, MSX2, POR, RECQL4
Specificity
6 %
Genes
100 %
Craniofacial Seq + Del/Dup Panel.

By Division of Genomic Diagnostics The Children's Hospital of Philadelphia (United States).

RUNX2, SALL1, SF3B4, SIX1, SIX5, SKI, SNRPB, TCF12, TCOF1, TWIST1, ZIC1, IFT122, RAB23, ALX1, CD96, POLR1A, WDR19, EVC2, POLR1C, POLR1D , (...)

View the complete list with 22 more genes
Specificity
3 %
Genes
100 %
Craniofacial Seq Analysis.

By Division of Genomic Diagnostics The Children's Hospital of Philadelphia (United States).

RUNX2, SALL1, SF3B4, SIX1, SIX5, SKI, SNRPB, TCF12, TCOF1, TWIST1, ZIC1, IFT122, RAB23, ALX1, CD96, POLR1A, WDR19, EVC2, POLR1C, POLR1D , (...)

View the complete list with 22 more genes
Specificity
3 %
Genes
100 %

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Sources and references

You can check the following sources for additional information.

OMIM Rare Disease Symptoms Checker

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