X-67723711-C-G

Position:

• chrX-67723711-C-G

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1 PM2 PM5 PP5

The NM_000044.6(AR):​c.2633C>G​(p.Thr878Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. T878A) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 21)
• Consequence: AR NM_000044.6 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 4.00

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 7 ACMG points.

• PM1: In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain 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 chrX-67723710-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 9831.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP5: Variant X-67723711-C-G is Pathogenic according to our data. Variant chrX-67723711-C-G is described in ClinVar as [Pathogenic]. Clinvar id is 9833.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chrX-67723711-C-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AR	NM_000044.6	c.2633C>G	p.Thr878Ser	missense_variant	8/8	ENST00000374690.9
AR	NM_001011645.3	c.1037C>G	p.Thr346Ser	missense_variant	9/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AR	ENST00000374690.9	c.2633C>G	p.Thr878Ser	missense_variant	8/8	1	NM_000044.6	P1
AR	ENST00000396044.8	c.2199C>G	p.His733Gln	missense_variant	5/5	1
AR	ENST00000396043.4	c.*981C>G		3_prime_UTR_variant, NMD_transcript_variant	9/9	1
AR	ENST00000612452.5	c.2633C>G	p.Thr878Ser	missense_variant, NMD_transcript_variant	8/9	5

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 21

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Prostate cancer, somatic Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

May 25, 1995

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.68
BayesDel_addAF	Pathogenic	0.34	D
BayesDel_noAF	Pathogenic	0.22
CADD	Uncertain	25
DANN	Uncertain	0.99
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.33	T
M_CAP	Pathogenic	0.80	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Pathogenic	1.0	D
MutationTaster	Benign	0.16	A;A;A
PROVEAN	Benign	-1.1	N
REVEL	Uncertain	0.40
Sift	Pathogenic	0.0	D
Vest4		0.27
MutPred		0.26		Loss of sheet (P = 0.0457);
MVP		0.94
ClinPred		0.95	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

LitVar

Other links and lift over

dbSNP: rs137852580; hg19: chrX-66943553; COSMIC: COSV65953158;