chr17-44352129-C-G

Variant names:

• chr17-44352129-C-G
• rs63750130
• NM_002087.4:c.1294C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002087.4(GRN):​c.1294C>G​(p.Arg432Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,526 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R432H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: GRN NM_002087.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.226
• Publications: 20 publications found

Genes affected

GRN (HGNC:4601): (granulin precursor) Granulins are a family of secreted, glycosylated peptides that are cleaved from a single precursor protein with 7.5 repeats of a highly conserved 12-cysteine granulin/epithelin motif. The 88 kDa precursor protein, progranulin, is also called proepithelin and PC cell-derived growth factor. Cleavage of the signal peptide produces mature granulin which can be further cleaved into a variety of active, 6 kDa peptides. These smaller cleavage products are named granulin A, granulin B, granulin C, etc. Epithelins 1 and 2 are synonymous with granulins A and B, respectively. Both the peptides and intact granulin protein regulate cell growth. However, different members of the granulin protein family may act as inhibitors, stimulators, or have dual actions on cell growth. Granulin family members are important in normal development, wound healing, and tumorigenesis. [provided by RefSeq, Jul 2008]

GRN Gene-Disease associations (from GenCC):

• frontotemporal dementia and/or amyotrophic lateral sclerosis

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• neuronal ceroid lipofuscinosis

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• GRN-related frontotemporal lobar degeneration with Tdp43 inclusions

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• neuronal ceroid lipofuscinosis 11

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics, G2P, Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25466254).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRN	NM_002087.4	c.1294C>G	p.Arg432Gly	missense_variant	Exon 11 of 13	ENST00000053867.8	NP_002078.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GRN	ENST00000053867.8	c.1294C>G	p.Arg432Gly	missense_variant	Exon 11 of 13	1	NM_002087.4	ENSP00000053867.2
GRN	ENST00000589265.5	c.823C>G	p.Arg275Gly	missense_variant	Exon 7 of 9	5		ENSP00000467616.1
GRN	ENST00000586443.1	c.733C>G	p.Arg245Gly	missense_variant	Exon 6 of 7	3		ENSP00000465673.1
GRN	ENST00000586242.1	c.-75C>G		upstream_gene_variant		3		ENSP00000467837.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000119 AC: 3 AN: 251088 AF XY: 0.0000221

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461526 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 727098

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53172

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000450 AC: 5 AN: 1111912

Other (OTH) AF: 0.00 AC: 0 AN: 60388

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	7.8
DANN	Benign	0.88
DEOGEN2	Uncertain	0.48	T;T
Eigen	Benign	-0.74
Eigen_PC	Benign	-0.83
FATHMM_MKL	Benign	0.39	N
LIST_S2	Benign	0.38	T;T
M_CAP	Benign	0.068	D
MetaRNN	Benign	0.25	T;T
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	1.9	L;.
PhyloP100		-0.23
PrimateAI	Benign	0.19	T
PROVEAN	Uncertain	-2.6	D;.
REVEL	Benign	0.16
Sift	Benign	0.079	T;.
Sift4G	Benign	0.27	T;T
Polyphen		0.58	P;.
Vest4		0.34
MutPred		0.49		Gain of methylation at R433 (P = 0.0322);.;
MVP		0.80
MPC		0.35
ClinPred		0.31	T
GERP RS		1.9
PromoterAI		0.0067	Neutral
Varity_R		0.082
gMVP		0.64

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: rs63750130; hg19: chr17-42429497;