X-640842-G-C

Variant names:

• chrX-640842-G-C
• rs397514461
• NM_000451.4:c.508G>C

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP2 PP3_Moderate PP5

The NM_000451.4(SHOX):​c.508G>C​(p.Ala170Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A170D) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SHOX NM_000451.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:2
• Conservation: PhyloP100: 7.80
• Publications: 0 publications found

Genes affected

SHOX (HGNC:10853): (SHOX homeobox) This gene belongs to the paired homeobox family and is located in the pseudoautosomal region 1 (PAR1) of X and Y chromosomes. Defects in this gene are associated with idiopathic growth retardation and in the short stature phenotype of Turner syndrome patients. This gene is highly conserved across species from mammals to fish to flies. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jul 2008]

SHOX Gene-Disease associations (from GenCC):

• Leri-Weill dyschondrosteosis

  Inheritance: XL, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Langer mesomelic dysplasia

  Inheritance: Unknown, XL, AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, G2P, Orphanet, Labcorp Genetics (formerly Invitae)
• SHOX-related short stature

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 8 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_000451.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrX-640843-C-A is described in ClinVar as Pathogenic. ClinVar VariationId is 29995.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 17 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: -0.53811 (below the threshold of 3.09). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to Leri-Weill dyschondrosteosis, Langer mesomelic dysplasia, SHOX-related short stature.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.934
• PP5: Variant X-640842-G-C is Pathogenic according to our data. Variant chrX-640842-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 29994.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000451.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SHOX	NM_000451.4	MANE Select	c.508G>C	p.Ala170Pro	missense	Exon 3 of 5	NP_000442.1
	SHOX	NM_006883.2		c.508G>C	p.Ala170Pro	missense	Exon 4 of 6	NP_006874.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SHOX	ENST00000686671.1	MANE Select	c.508G>C	p.Ala170Pro	missense	Exon 3 of 5	ENSP00000508521.1
	SHOX	ENST00000381575.6	TSL:1	c.508G>C	p.Ala170Pro	missense	Exon 3 of 5	ENSP00000370987.1
	SHOX	ENST00000381578.6	TSL:5	c.508G>C	p.Ala170Pro	missense	Exon 4 of 6	ENSP00000370990.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Langer mesomelic dysplasia syndrome (1)
1	-	-	Leri-Weill dyschondrosteosis (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.68	D
BayesDel_noAF	Pathogenic	0.73
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.84	D
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.96	D
M_CAP	Pathogenic	0.70	D
MetaRNN	Pathogenic	0.93	D
MetaSVM	Pathogenic	0.80	D
MutationAssessor	Pathogenic	4.5	H
PhyloP100		7.8
PrimateAI	Pathogenic	0.93	D
PROVEAN	Pathogenic	-4.4	D
REVEL	Pathogenic	0.69
Sift	Uncertain	0.016	D
Sift4G	Uncertain	0.017	D
Polyphen		0.83	P
Vest4		0.86
MutPred		0.76		Gain of glycosylation at A170 (P = 0.0028)
MVP		1.0
MPC		1.8
ClinPred		1.0	D
GERP RS		1.4
Varity_R		0.99

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs397514461; hg19: chrX-601577;