X-67723701-C-A

Position:

• chrX-67723701-C-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1 PM2 PM5

The NM_000044.6(AR):​c.2623C>A​(p.His875Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H875R) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 20)
• Consequence: AR NM_000044.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.91

Genes affected

AR (HGNC:644): (androgen receptor) The androgen receptor gene is more than 90 kb long and codes for a protein that has 3 major functional domains: the N-terminal domain, DNA-binding domain, and androgen-binding domain. The protein functions as a steroid-hormone activated transcription factor. Upon binding the hormone ligand, the receptor dissociates from accessory proteins, translocates into the nucleus, dimerizes, and then stimulates transcription of androgen responsive genes. This gene contains 2 polymorphic trinucleotide repeat segments that encode polyglutamine and polyglycine tracts in the N-terminal transactivation domain of its protein. Expansion of the polyglutamine tract from the normal 9-34 repeats to the pathogenic 38-62 repeats causes spinal bulbar muscular atrophy (SBMA, also known as Kennedy's disease). Mutations in this gene are also associated with complete androgen insensitivity (CAIS). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2017]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM1: In a helix (size 30) in uniprot entity ANDR_HUMAN there are 9 pathogenic changes around while only 0 benign (100%) in NM_000044.6
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AR	NM_000044.6	c.2623C>A	p.His875Asn	missense_variant	8/8	ENST00000374690.9	NP_000035.2
AR	NM_001011645.3	c.1027C>A	p.His343Asn	missense_variant	9/9		NP_001011645.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AR	ENST00000374690.9	c.2623C>A	p.His875Asn	missense_variant	8/8	1	NM_000044.6	ENSP00000363822	P1
AR	ENST00000396044.8	c.2189C>A	p.Ala730Glu	missense_variant	5/5	1		ENSP00000379359
AR	ENST00000396043.4	c.*971C>A		3_prime_UTR_variant, NMD_transcript_variant	9/9	1		ENSP00000379358
AR	ENST00000612452.5	c.2623C>A	p.His875Asn	missense_variant, NMD_transcript_variant	8/9	5		ENSP00000484033

Frequencies

GnomAD3 genomes Cov.: 20

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 20

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.14
CADD	Pathogenic	27
DANN	Uncertain	0.98
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.40	T
M_CAP	Pathogenic	0.86	D
MetaRNN	Uncertain	0.64	D
MetaSVM	Pathogenic	1.1	D
MutationTaster	Benign	1.0	D;D;D
PROVEAN	Benign	0.0	N
REVEL	Uncertain	0.64
Sift	Pathogenic	0.0	D
Vest4		0.38
MutPred		0.60		Gain of disorder (P = 0.0379);
MVP		0.97
ClinPred		0.99	D
GERP RS		5.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-66943543;