4-87982853-G-C

Position:

• chr4-87982853-G-C

Variant summary

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

The NM_001040058.2(SPP1):​c.902G>C​(p.Arg301Pro) 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 1,461,766 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R301H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SPP1 NM_001040058.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.415

Genes affected

SPP1 (HGNC:11255): (secreted phosphoprotein 1) The protein encoded by this gene is involved in the attachment of osteoclasts to the mineralized bone matrix. The encoded protein is secreted and binds hydroxyapatite with high affinity. The osteoclast vitronectin receptor is found in the cell membrane and may be involved in the binding to this protein. This protein is also a cytokine that upregulates expression of interferon-gamma and interleukin-12. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2011]

SPP1 (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
SPP1	NM_001040058.2	c.902G>C	p.Arg301Pro	missense_variant	7/7	ENST00000395080.8	NP_001035147.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPP1	ENST00000395080.8	c.902G>C	p.Arg301Pro	missense_variant	7/7	1	NM_001040058.2	ENSP00000378517.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461766 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727168

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: 0.00

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.43
BayesDel_addAF	Benign	0.0033	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.38	.;.;T;.
Eigen	Benign	-0.16
Eigen_PC	Benign	-0.38
FATHMM_MKL	Benign	0.061	N
LIST_S2	Uncertain	0.88	D;D;D;D
M_CAP	Benign	0.039	D
MetaRNN	Uncertain	0.56	D;D;D;D
MetaSVM	Benign	-0.74	T
MutationAssessor	Benign	2.0	.;.;M;.
PrimateAI	Benign	0.26	T
PROVEAN	Uncertain	-4.2	.;D;D;D
REVEL	Benign	0.18
Sift	Uncertain	0.0050	.;D;D;D
Sift4G	Uncertain	0.022	D;T;D;T
Polyphen		0.99	.;.;D;.
Vest4		0.57
MutPred		0.46		.;.;Gain of glycosylation at S303 (P = 0.0056);.;
MVP		0.77
MPC		0.65
ClinPred		0.97	D
GERP RS		0.21
Varity_R		0.69
gMVP		0.085

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: rs4660; hg19: chr4-88904005;