Genetic Variant NM_020547.3:c.188G>C (chr12-53424426-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_020547.3(AMHR2):c.188G>C(p.Gly63Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,454 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

AMHR2
NM_020547.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.90

Publications

0 publications found

Variant links:

Genes affected

AMHR2 (HGNC:465): (anti-Mullerian hormone receptor type 2) This gene encodes the receptor for the anti-Mullerian hormone (AMH) which, in addition to testosterone, results in male sex differentiation. AMH and testosterone are produced in the testes by different cells and have different effects. Testosterone promotes the development of male genitalia while the binding of AMH to the encoded receptor prevents the development of the mullerian ducts into uterus and Fallopian tubes. Mutations in this gene are associated with persistent Mullerian duct syndrome type II. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Sep 2009]

AMHR2 Gene-Disease associations (from GenCC):

persistent Mullerian duct syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine

AMHR2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AMHR2	NM_020547.3 link	c.188G>C	p.Gly63Ala	missense_variant	Exon 2 of 11	ENST00000257863.9	NP_065434.1	Q16671-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
AMHR2	ENST00000257863.9 link	c.188G>C	p.Gly63Ala	missense_variant	Exon 2 of 11	1	NM_020547.3	ENSP00000257863.3	Q16671-1
AMHR2	ENST00000379791.7 link	c.188G>C	p.Gly63Ala	missense_variant	Exon 2 of 9	1		ENSP00000369117.3	Q16671-3
AMHR2	ENST00000550311.5 link	c.188G>C	p.Gly63Ala	missense_variant	Exon 2 of 11	1		ENSP00000446661.1	Q16671-2
AMHR2	ENST00000553037.1 link	n.149G>C		non_coding_transcript_exon_variant	Exon 1 of 2	4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461454

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727008

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44646

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86192

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5652

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111892

Other (OTH)

AF:

0.0000166

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Feb 12, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.188G>C (p.G63A) alteration is located in exon 2 (coding exon 2) of the AMHR2 gene. This alteration results from a G to C substitution at nucleotide position 188, causing the glycine (G) at amino acid position 63 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.050

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.61

D;.;.

Eigen

Uncertain

0.28

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.86

D;D;D

M_CAP

Uncertain

0.15

MetaRNN

Uncertain

0.70

D;D;D

MetaSVM

Uncertain

0.62

MutationAssessor

Benign

0.69

N;N;N

PhyloP100

4.9

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-2.1

N;N;N

REVEL

Uncertain

0.52

Sift

Benign

0.17

T;T;T

Sift4G

Uncertain

0.034

D;D;D

Polyphen

1.0

D;.;.

Vest4

0.69

MutPred

0.41

Gain of catalytic residue at R59 (P = 0.0017);Gain of catalytic residue at R59 (P = 0.0017);Gain of catalytic residue at R59 (P = 0.0017);

MVP

0.97

MPC

0.51

ClinPred

0.83

GERP RS

4.2

PromoterAI

-0.0035

Neutral

(source)

Varity_R

0.20

gMVP

0.66

Mutation Taster

=67/33

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over