NM_000406.3:c.806C>T

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1PP2PP3_ModeratePP5_Moderate

The NM_000406.3(GNRHR):c.806C>T(p.Thr269Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000194 in 1,602,034 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

GNRHR
NM_000406.3 missense

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 4.24

Publications

9 publications found

Variant links:

Genes affected

GNRHR (HGNC:4421): (gonadotropin releasing hormone receptor) This gene encodes the receptor for type 1 gonadotropin-releasing hormone. This receptor is a member of the seven-transmembrane, G-protein coupled receptor (GPCR) family. It is expressed on the surface of pituitary gonadotrope cells as well as lymphocytes, breast, ovary, and prostate. Following binding of gonadotropin-releasing hormone, the receptor associates with G-proteins that activate a phosphatidylinositol-calcium second messenger system. Activation of the receptor ultimately causes the release of gonadotropic luteinizing hormone (LH) and follicle stimulating hormone (FSH). Defects in this gene are a cause of hypogonadotropic hypogonadism (HH). Alternative splicing results in multiple transcript variants encoding different isoforms. More than 18 transcription initiation sites in the 5' region and multiple polyA signals in the 3' region have been identified for this gene. [provided by RefSeq, Jul 2008]

GNRHR links:

UBA6-DT (HGNC:49083): (UBA6 divergent transcript)

UBA6-DT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_000406.3

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 24 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: 0.30095 (below the threshold of 3.09). Trascript score misZ: 0.14426 (below the threshold of 3.09). GenCC associations: The gene is linked to hypogonadotropic hypogonadism 7 with or without anosmia, hypogonadotropic hypogonadism.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.878

PP5

Variant 4-67740661-G-A is Pathogenic according to our data. Variant chr4-67740661-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 140611.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GNRHR	NM_000406.3 link	c.806C>T	p.Thr269Met	missense_variant	Exon 3 of 3	ENST00000226413.5	NP_000397.1	P30968-1
GNRHR	NM_001012763.2 link	c.678C>T	p.Asp226Asp	synonymous_variant	Exon 3 of 3		NP_001012781.1	P30968-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GNRHR	ENST00000226413.5 link	c.806C>T	p.Thr269Met	missense_variant	Exon 3 of 3	1	NM_000406.3	ENSP00000226413.5		P30968-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000119

AC:

AN:

251190

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000186

AC:

AN:

1449914

Hom.:

Cov.:

AF XY:

0.0000180

AC XY:

AN XY:

722200

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33278

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26066

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39628

South Asian (SAS)

AF:

0.00

AC:

AN:

86022

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.0000218

AC:

AN:

1101058

Other (OTH)

AF:

0.0000167

AC:

AN:

59990

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152120

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74300

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41438

American (AMR)

AF:

0.00

AC:

AN:

15244

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000376

Hom.:

Bravo

AF:

0.0000227

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hypogonadotropic hypogonadism 7 with or without anosmia

Pathogenic:2

Sep 01, 2012

Endocrinology Clinic, Seth G.S. Medical College

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:research

- -

Oct 09, 2024

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with hypogonadotropic hypogonadism 7 without anosmia (MIM#146110). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from threonine to methionine. (I) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD (v3) <0.01 for a recessive condition (4 heterozygotes, 0 homozygotes). (SP) 0502 - Missense variant with conflicting in silico predictions and uninformative conservation. (I) 0600 - Variant is located in the annotated 7 transmembrane receptor (rhodopsin family) domain (DECIPHER). (I) 0802 - This variant has moderate previous evidence of pathogenicity in unrelated individuals. This variant has been reported in three homozygous individuals with congenital hypogonadotropic hypogonadism (HH) or normosmic isolated HH. An additional two affected individuals were heterozygous for this variant, with no second hit identified in this gene (ClinVar, PMID: 30415482, PMID: 30476149, PMID: 27544332, PMID: 26708526, PMID: 22031817). (SP) 0901 - This variant has strong evidence for segregation with disease. This variant segregated in a single family with three affected siblings (PMID: 30415482). (SP) 1002 - This variant has moderate functional evidence supporting abnormal protein function. Transfected COS7 and HEK293 cells both demonstrated impaired protein function, including reduced protein binding and activation (PMID: 30476149). (SP) 1201 - Heterozygous variant detected in trans with a second pathogenic heterozygous variant (c.317A>G, p.(Gln106Arg)) in a recessive disease. (I) 1205 - This variant has been shown to be maternally inherited. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.34

BayesDel_addAF

Uncertain

0.021

BayesDel_noAF

Uncertain

-0.040

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.74

Eigen

Uncertain

0.59

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.84

M_CAP

Pathogenic

0.31

MetaRNN

Pathogenic

0.88

MetaSVM

Benign

-0.70

PhyloP100

4.2

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.5

REVEL

Benign

0.25

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.82

MVP

0.79

MPC

0.36

ClinPred

0.98

GERP RS

5.4

Varity_R

0.60

gMVP

0.61

Mutation Taster

=28/72

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over