rs515726220

Variant names:

• chr4-67740625-G-A
• rs515726220
• NM_000406.3:c.842C>T

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1 PM2 PP2 PP3_Moderate PP5

The NM_000406.3(GNRHR):​c.842C>T​(p.Thr281Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: GNRHR NM_000406.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 9.87
• Publications: 2 publications found

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]

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

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_000406.3
• 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 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, 0.879
• PP5: Variant 4-67740625-G-A is Pathogenic according to our data. Variant chr4-67740625-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 126540.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000406.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GNRHR	NM_000406.3	MANE Select	c.842C>T	p.Thr281Ile	missense	Exon 3 of 3	NP_000397.1
	GNRHR	NM_001012763.2		c.714C>T	p.Asp238Asp	synonymous	Exon 3 of 3	NP_001012781.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GNRHR	ENST00000226413.5	TSL:1 MANE Select	c.842C>T	p.Thr281Ile	missense	Exon 3 of 3	ENSP00000226413.5
	GNRHR	ENST00000420975.2	TSL:1	c.714C>T	p.Asp238Asp	synonymous	Exon 3 of 3	ENSP00000397561.2
	UBA6-DT	ENST00000500538.7	TSL:1	n.1920+8280G>A		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Hypogonadotropic hypogonadism 7 with or without anosmia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.41
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.16
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.77	D
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.78	T
M_CAP	Pathogenic	0.30	D
MetaRNN	Pathogenic	0.88	D
MetaSVM	Uncertain	0.19	D
PhyloP100		9.9
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-5.2	D
REVEL	Pathogenic	0.77
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.68
MutPred		0.52		Loss of catalytic residue at T281 (P = 0.0251)
MVP		0.91
MPC		0.35
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.89
gMVP		0.71
Mutation Taster		=14/86	disease causing (ClinVar)

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: rs515726220; hg19: chr4-68606343;