4-67738589-A-C

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_000406.3(GNRHR):c.*1891T>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.23 in 151,828 control chromosomes in the GnomAD database, including 4,155 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.23 (4155 hom., cov: 32)
• Consequence: GNRHR NM_000406.3 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.704

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

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.95).
• BP6: Variant 4-67738589-A-C is Benign according to our data. Variant chr4-67738589-A-C is described in ClinVar as [Benign]. Clinvar id is 349431.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.251 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GNRHR	NM_000406.3	c.*1891T>G		3_prime_UTR_variant	3/3	ENST00000226413.5
GNRHR	NM_001012763.2	c.*2000T>G		3_prime_UTR_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GNRHR	ENST00000226413.5	c.*1891T>G		3_prime_UTR_variant	3/3	1	NM_000406.3	P1
UBA6-DT	ENST00000500538.7	n.1920+6244A>C		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes AF: 0.230 AC: 34842 AN: 151710 Hom.: 4150 Cov.: 32

Gnomad AFR AF: 0.205

Gnomad AMI AF: 0.408

Gnomad AMR AF: 0.214

Gnomad ASJ AF: 0.220

Gnomad EAS AF: 0.185

Gnomad SAS AF: 0.0971

Gnomad FIN AF: 0.263

Gnomad MID AF: 0.307

Gnomad NFE AF: 0.254

Gnomad OTH AF: 0.223

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.230 AC: 34860 AN: 151828 Hom.: 4155 Cov.: 32 AF XY: 0.228 AC XY: 16899 AN XY: 74210

Gnomad4 AFR AF: 0.205

Gnomad4 AMR AF: 0.213

Gnomad4 ASJ AF: 0.220

Gnomad4 EAS AF: 0.183

Gnomad4 SAS AF: 0.0964

Gnomad4 FIN AF: 0.263

Gnomad4 NFE AF: 0.254

Gnomad4 OTH AF: 0.222

Alfa AF: 0.230 Hom.: 577

Bravo AF: 0.233

Asia WGS AF: 0.147 AC: 512 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hypogonadotropic hypogonadism 7 with or without anosmia Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.95
Cadd	Benign	4.2
Dann	Benign	0.54

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs12508464; hg19: chr4-68604307;