12-53328338-G-T

Position:

• chr12-53328338-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001173467.3(SP7):​c.1104C>A​(p.His368Gln) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: SP7 NM_001173467.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.61

Genes affected

SP7 (HGNC:17321): (Sp7 transcription factor) This gene encodes a member of the Sp subfamily of Sp/XKLF transcription factors. Sp family proteins are sequence-specific DNA-binding proteins characterized by an amino-terminal trans-activation domain and three carboxy-terminal zinc finger motifs. This protein is a bone specific transcription factor and is required for osteoblast differentiation and bone formation.[provided by RefSeq, Jul 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.38793746).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SP7	NM_001173467.3	c.1104C>A	p.His368Gln	missense_variant	3/3	ENST00000536324.4
SP7	NM_152860.2	c.1104C>A	p.His368Gln	missense_variant	2/2
SP7	NM_001300837.2	c.1050C>A	p.His350Gln	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SP7	ENST00000536324.4	c.1104C>A	p.His368Gln	missense_variant	3/3	2	NM_001173467.3	P1
SP7	ENST00000303846.3	c.1104C>A	p.His368Gln	missense_variant	2/2	1		P1
SP7	ENST00000537210.2	c.1050C>A	p.His350Gln	missense_variant	2/2	1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 68

GnomAD4 genome Cov.: 34

Alfa AF: 0.0000370 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 27, 2021

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C15"). This variant has not been reported in the literature in individuals affected with SP7-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces histidine, a(n) basic and polar amino acid, with glutamine, a(n) neutral and polar amino acid, at codon 368 of the SP7 protein (p.His368Gln). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Uncertain	0.040	T
BayesDel_noAF	Benign	-0.18
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.83	D;D;.
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.77	.;T;T
M_CAP	Benign	0.037	D
MetaRNN	Benign	0.39	T;T;T
MetaSVM	Benign	-0.38	T
MutationAssessor	Benign	0.0	N;N;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-7.6	D;D;D
REVEL	Uncertain	0.50
Sift	Uncertain	0.0010	D;D;D
Sift4G	Uncertain	0.0060	D;D;D
Polyphen		1.0	D;D;.
Vest4		0.40
MutPred		0.57		Gain of relative solvent accessibility (P = 0.09);Gain of relative solvent accessibility (P = 0.09);.;
MVP		0.52
MPC		1.0
ClinPred		1.0	D
GERP RS		3.8
Varity_R		0.87

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: rs1944657970; hg19: chr12-53722122;