X-67721905-G-C

Variant names:

• chrX-67721905-G-C
• rs137852565
• NM_000044.6:c.2391G>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP2

The NM_000044.6(AR):​c.2391G>C​(p.Trp797Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000000911 in 1,097,866 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 9.1e-7 (0 hom. 0 hem.)
• Consequence: AR NM_000044.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.77
• Publications: 3 publications found

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]

AR Gene-Disease associations (from GenCC):

• androgen insensitivity syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
• Kennedy disease

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• partial androgen insensitivity syndrome

  Inheritance: XL Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
• complete androgen insensitivity syndrome

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 147 curated pathogenic missense variants (we use a threshold of 10). The gene has 39 curated benign missense variants. Gene score misZ: 1.2272 (below the threshold of 3.09). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to androgen insensitivity syndrome, Kennedy disease, complete androgen insensitivity syndrome, partial androgen insensitivity syndrome.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AR	NM_000044.6	c.2391G>C	p.Trp797Cys	missense_variant	Exon 6 of 8	ENST00000374690.9	NP_000035.2
AR	NM_001011645.3	c.795G>C	p.Trp265Cys	missense_variant	Exon 7 of 9		NP_001011645.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AR	ENST00000374690.9	c.2391G>C	p.Trp797Cys	missense_variant	Exon 6 of 8	1	NM_000044.6	ENSP00000363822.3

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD2 exomes AF: 0.00000546 AC: 1 AN: 183204 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000122

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 9.11e-7 AC: 1 AN: 1097866 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 363250

African (AFR) AF: 0.00 AC: 0 AN: 26393

American (AMR) AF: 0.00 AC: 0 AN: 35202

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19380

East Asian (EAS) AF: 0.00 AC: 0 AN: 30191

South Asian (SAS) AF: 0.00 AC: 0 AN: 54141

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40525

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4133

European-Non Finnish (NFE) AF: 0.00000119 AC: 1 AN: 841827

Other (OTH) AF: 0.00 AC: 0 AN: 46074

GnomAD4 genome Cov.: 22

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.25	D
BayesDel_noAF	Uncertain	0.13
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Benign	0.077	T;.;.
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.93	D;D;D
M_CAP	Pathogenic	0.84	D
MetaRNN	Uncertain	0.70	D;D;D
MetaSVM	Pathogenic	0.98	D
PhyloP100		5.8
PrimateAI	Uncertain	0.72	T
PROVEAN	Pathogenic	-4.7	.;D;D
REVEL	Pathogenic	0.79
Sift	Uncertain	0.015	.;D;D
Sift4G	Benign	0.096	T;T;D
Vest4		0.45
MVP		0.99
MPC		1.6
ClinPred		0.89	D
GERP RS		4.8
Varity_R		0.94
gMVP		0.85
Mutation Taster		=33/67	disease causing

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: rs137852565; hg19: chrX-66941747;