17-63917484-C-A

Position:

• chr17-63917484-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000515.5(GH1):​c.479G>T​(p.Arg160Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,668 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: GH1 NM_000515.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.912

Genes affected

GH1 (HGNC:4261): (growth hormone 1) The protein encoded by this gene is a member of the somatotropin/prolactin family of hormones which play an important role in growth control. The gene, along with four other related genes, is located at the growth hormone locus on chromosome 17 where they are interspersed in the same transcriptional orientation; an arrangement which is thought to have evolved by a series of gene duplications. The five genes share a remarkably high degree of sequence identity. Alternative splicing generates additional isoforms of each of the five growth hormones, leading to further diversity and potential for specialization. This particular family member is expressed in the pituitary but not in placental tissue as is the case for the other four genes in the growth hormone locus. Mutations in or deletions of the gene lead to growth hormone deficiency and short stature. [provided by RefSeq, Jul 2008]

ENSG00000285947 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GH1	NM_000515.5	c.479G>T	p.Arg160Leu	missense_variant	5/5	ENST00000323322.10	NP_000506.2
GH1	NM_022559.4	c.434G>T	p.Arg145Leu	missense_variant	5/5		NP_072053.1
GH1	NM_022560.4	c.359G>T	p.Arg120Leu	missense_variant	4/4		NP_072054.1
LOC112268204	XR_002958148.2	n.341-113C>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GH1	ENST00000323322.10	c.479G>T	p.Arg160Leu	missense_variant	5/5	1	NM_000515.5	ENSP00000312673.5
ENSG00000285947	ENST00000647774.1	c.755G>T	p.Arg252Leu	missense_variant	8/8			ENSP00000497443.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461668 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727144

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 27, 2024

The c.479G>T (p.R160L) alteration is located in exon 5 (coding exon 5) of the GH1 gene. This alteration results from a G to T substitution at nucleotide position 479, causing the arginine (R) at amino acid position 160 to be replaced by a leucine (L). 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	0.14
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Benign	15
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.76	.;.;D;D
Eigen	Benign	-0.54
Eigen_PC	Benign	-0.53
FATHMM_MKL	Benign	0.20	N
LIST_S2	Benign	0.67	T;T;T;T
M_CAP	Uncertain	0.24	D
MetaRNN	Uncertain	0.73	D;D;D;D
MetaSVM	Uncertain	-0.15	T
PrimateAI	Benign	0.38	T
PROVEAN	Uncertain	-4.2	D;D;D;D
REVEL	Uncertain	0.55
Sift	Uncertain	0.022	D;D;D;D
Sift4G	Benign	0.067	T;T;T;D
Polyphen		0.0030	.;.;B;B
Vest4		0.66
MutPred		0.58		.;.;Loss of disorder (P = 0.042);.;
MVP		0.88
MPC		0.16
ClinPred		0.49	T
GERP RS		2.6
Varity_R		0.45
gMVP		0.43

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

LitVar

Other links and lift over

dbSNP: rs41295255; hg19: chr17-61994844;