NM_002087.4:c.1297C>G

Variant names:

• chr17-44352132-C-G
• rs63750412
• NM_002087.4:c.1297C>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.1297C>G​(p.Arg433Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 17/22 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. R433Q) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: GRN NM_002087.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.819
• Publications: 0 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=0.158752).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002087.4. 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
	GRN	NM_002087.4	MANE Select	c.1297C>G	p.Arg433Gly	missense	Exon 11 of 13	NP_002078.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRN	ENST00000053867.8	TSL:1 MANE Select	c.1297C>G	p.Arg433Gly	missense	Exon 11 of 13	ENSP00000053867.2
	GRN	ENST00000589265.5	TSL:5	c.826C>G	p.Arg276Gly	missense	Exon 7 of 9	ENSP00000467616.1
	GRN	ENST00000586443.1	TSL:3	c.736C>G	p.Arg246Gly	missense	Exon 6 of 7	ENSP00000465673.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.081
BayesDel_addAF	Benign	-0.098	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	8.4
DANN	Benign	0.82
DEOGEN2	Benign	0.26	T
Eigen	Benign	-0.71
Eigen_PC	Benign	-0.82
FATHMM_MKL	Benign	0.20	N
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.83	T
MutationAssessor	Benign	1.7	L
PhyloP100		0.82
PrimateAI	Benign	0.20	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.071
Sift	Benign	0.33	T
Sift4G	Benign	0.22	T
Polyphen		0.043	B
Vest4		0.26
MutPred		0.45		Gain of methylation at R432 (P = 0.045)
MVP		0.84
MPC		0.33
ClinPred		0.26	T
GERP RS		1.5
PromoterAI		-0.010	Neutral
Varity_R		0.12
gMVP		0.53

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: rs63750412; hg19: chr17-42429500;