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Mendeliome v2.392 HOXD cluster regulatory region Sarah Milton changed review comment from: The HOXD cluster of genes including HOXD1, HOXD3, HOXD4, HOXD8, HOXD9, HOXD10, HOXD11, HOXD12, HOXD13 are involved in embryonic patterning in developing limb buds.

Multiple publications report copy number changes in the 2q31 region involving the HOXD cluster resulting in Mesomelic dysplasia, Kantaputra type characterised by marked shortening of the upper and lower limbs and progressive flexion contractures of PIP joints.

Copy number changes in affected individuals included deletions, duplications and inversions ranging from 93kb to 1mb, many individuals had more than one structural variant within the region.

The proposed molecular mechanism is repositioning of the HOX genes in relation to up and downstream enhancers resulting in misexpression.

It should be noted deletions of the HOX gene cluster don't recapitulate the phenotype as it is thought there is compensation from HOXA genes.

Functional studies in a mouse model showed inappropriate expression of HOXD13 in the middle segment of limb (ulnar/radius/tibia/fibula) and loss of normal expression in hand/foot, as well as loss of normal HOXD11 expression in the middle segment of the limb.
This is thought to occur as each enhancer region normally acts on different precursor cells in normal physiology thus rearranging the region results in misexpression.

Note: coordinates used for the above entry were the minimum seen in an affected individual (duplication).
Authors of above publications did note if the copy number variant is too large it did not recapitulate the phenotype.
Sources: Literature; to: The HOXD cluster of genes including HOXD1, HOXD3, HOXD4, HOXD8, HOXD9, HOXD10, HOXD11, HOXD12, HOXD13 are involved in embryonic patterning in developing limb buds.

Multiple publications report copy number changes in the 2q31 region involving the HOXD cluster resulting in Mesomelic dysplasia, Kantaputra type characterised by marked shortening of the upper and lower limbs and progressive flexion contractures of PIP joints.

Copy number changes in affected individuals included deletions, duplications and inversions ranging from 93kb to 1mb, many individuals had more than one structural variant within the region.

The proposed molecular mechanism is repositioning of the HOX genes in relation to up and downstream enhancers resulting in misexpression.

It should be noted deletions of the HOX gene cluster don't recapitulate the phenotype as it is thought there is compensation from HOXA genes.

Functional studies in a mouse model showed inappropriate expression of HOXD13 in the middle segment of limb (ulnar/radius/tibia/fibula) and loss of normal expression in hand/foot, as well as loss of normal HOXD11 expression in the middle segment of the limb.
This is thought to occur as each enhancer region acts on different precursor cells in normal physiology thus rearranging the region results in misexpression.

Note: coordinates used for the above entry were the minimum seen in an affected individual (duplication).
Authors of above publications did note if the copy number variant is too large it did not recapitulate the phenotype.
Sources: Literature
Mendeliome v2.392 HOXD cluster regulatory region Sarah Milton changed review comment from: The HOXD cluster of genes including HOXD1, HOXD3, HOXD4, HOXD8, HOXD9, HOXD10, HOXD11, HOXD12, HOXD13 are involved in embryonic patterning in developing limb buds.

Multiple publications report copy number changes in the 2q31 region involving the HOXD cluster resulting in Mesomelic dysplasia, Kantaputra type characterised by marked shortening of the upper and lower limbs and progressive flexion contractures of PIP joints.

Copy number changes in affected individuals included deletions, duplications and inversions ranging from 93kb to 1mb, many individuals had more than one structural variant within the region.

The proposed molecular mechanism is repositioning of the HOX genes in relation to up and downstream enhancers resulting in misexpression.

It should be noted deletions of the HOX gene cluster don't recapitulate the phenotype as it is thought there is compensation from HOXA genes.

Functional studies in a mouse model showed inappropriate expression of HOXD13 in the middle segment of limb (ulnar/radius/tibia/fibula) and loss of normal expression in hand/foot, as well as loss of normal HOXD11 expression in the middle segment of the limb.
This is thought to occur as each enhancer region normally acts on different precursor cells but repositioning of genes in the region results in misexpression.

Note: coordinates used for the above entry were the minimum seen in an affected individual (duplication).
Authors of above publications did note if the copy number variant is too large it did not recapitulate the phenotype.
Sources: Literature; to: The HOXD cluster of genes including HOXD1, HOXD3, HOXD4, HOXD8, HOXD9, HOXD10, HOXD11, HOXD12, HOXD13 are involved in embryonic patterning in developing limb buds.

Multiple publications report copy number changes in the 2q31 region involving the HOXD cluster resulting in Mesomelic dysplasia, Kantaputra type characterised by marked shortening of the upper and lower limbs and progressive flexion contractures of PIP joints.

Copy number changes in affected individuals included deletions, duplications and inversions ranging from 93kb to 1mb, many individuals had more than one structural variant within the region.

The proposed molecular mechanism is repositioning of the HOX genes in relation to up and downstream enhancers resulting in misexpression.

It should be noted deletions of the HOX gene cluster don't recapitulate the phenotype as it is thought there is compensation from HOXA genes.

Functional studies in a mouse model showed inappropriate expression of HOXD13 in the middle segment of limb (ulnar/radius/tibia/fibula) and loss of normal expression in hand/foot, as well as loss of normal HOXD11 expression in the middle segment of the limb.
This is thought to occur as each enhancer region normally acts on different precursor cells in normal physiology thus rearranging the region results in misexpression.

Note: coordinates used for the above entry were the minimum seen in an affected individual (duplication).
Authors of above publications did note if the copy number variant is too large it did not recapitulate the phenotype.
Sources: Literature
Mendeliome v2.392 HOXD cluster regulatory region Sarah Milton Region: HOXD cluster regulatory region was added
Region: HOXD cluster regulatory region was added to Mendeliome. Sources: Literature
regulatory region tags were added to Region: HOXD cluster regulatory region.
Mode of inheritance for Region: HOXD cluster regulatory region was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for Region: HOXD cluster regulatory region were set to 20648051; 36990510; 34408147; 31591517; 20577005; 29517766
Phenotypes for Region: HOXD cluster regulatory region were set to Mesomelic dysplasia, Kantaputra type, MIM#156232
Review for Region: HOXD cluster regulatory region was set to GREEN
Added comment: The HOXD cluster of genes including HOXD1, HOXD3, HOXD4, HOXD8, HOXD9, HOXD10, HOXD11, HOXD12, HOXD13 are involved in embryonic patterning in developing limb buds.

Multiple publications report copy number changes in the 2q31 region involving the HOXD cluster resulting in Mesomelic dysplasia, Kantaputra type characterised by marked shortening of the upper and lower limbs and progressive flexion contractures of PIP joints.

Copy number changes in affected individuals included deletions, duplications and inversions ranging from 93kb to 1mb, many individuals had more than one structural variant within the region.

The proposed molecular mechanism is repositioning of the HOX genes in relation to up and downstream enhancers resulting in misexpression.

It should be noted deletions of the HOX gene cluster don't recapitulate the phenotype as it is thought there is compensation from HOXA genes.

Functional studies in a mouse model showed inappropriate expression of HOXD13 in the middle segment of limb (ulnar/radius/tibia/fibula) and loss of normal expression in hand/foot, as well as loss of normal HOXD11 expression in the middle segment of the limb.
This is thought to occur as each enhancer region normally acts on different precursor cells but repositioning of genes in the region results in misexpression.

Note: coordinates used for the above entry were the minimum seen in an affected individual (duplication).
Authors of above publications did note if the copy number variant is too large it did not recapitulate the phenotype.
Sources: Literature
Mendeliome v2.0 HOXD10 Gene migrated from ENSG00000128710 to ENSG00000128710 (gene set migration)
Mendeliome v0.3238 HOXD10 Zornitza Stark reviewed gene: HOXD10: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: ; Mode of inheritance: None
Mendeliome v0.3238 HOXD10 Zornitza Stark Marked gene: HOXD10 as ready
Mendeliome v0.3238 HOXD10 Zornitza Stark Gene: hoxd10 has been classified as Red List (Low Evidence).
Mendeliome v0.3238 HOXD10 Zornitza Stark Phenotypes for gene: HOXD10 were changed from to Charcot-Marie-Tooth disease, foot deformity of; Vertical talus, congenital (MIM#192950)
Mendeliome v0.3237 HOXD10 Zornitza Stark Publications for gene: HOXD10 were set to
Mendeliome v0.3236 HOXD10 Zornitza Stark Mode of inheritance for gene: HOXD10 was changed from Unknown to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.3235 HOXD10 Zornitza Stark Classified gene: HOXD10 as Red List (low evidence)
Mendeliome v0.3235 HOXD10 Zornitza Stark Gene: hoxd10 has been classified as Red List (Low Evidence).
Mendeliome v0.3234 HOXD10 Crystle Lee reviewed gene: HOXD10: Rating: AMBER; Mode of pathogenicity: None; Publications: 15146389, 16450407; Phenotypes: Charcot-Marie-Tooth disease, foot deformity of, Vertical talus, congenital (MIM#192950); Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Mendeliome v0.0 HOXD10 Zornitza Stark gene: HOXD10 was added
gene: HOXD10 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: HOXD10 was set to Unknown