1-54251844-G-A

Position:

• chr1-54251844-G-A

Variant summary

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

The NM_145716.4(SSBP3):​c.524C>T​(p.Pro175Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: SSBP3 NM_145716.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.23

Genes affected

SSBP3 (HGNC:15674): (single stranded DNA binding protein 3) Predicted to enable single-stranded DNA binding activity and transcription coactivator activity. Predicted to be involved in head development and positive regulation of transcription by RNA polymerase II. Predicted to act upstream of or within hematopoietic progenitor cell differentiation. Predicted to be part of protein-containing complex. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

SSBP3 (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
SSBP3	NM_145716.4	c.524C>T	p.Pro175Leu	missense_variant	8/18		NP_663768.1
SSBP3	NM_001394360.1	c.443C>T	p.Pro148Leu	missense_variant	7/17		NP_001381289.1
SSBP3	NM_018070.5	c.464C>T	p.Pro155Leu	missense_variant	7/17		NP_060540.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SSBP3	ENST00000610401.6	c.524C>T	p.Pro175Leu	missense_variant	8/18	5		ENSP00000479674.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 10, 2022

The c.524C>T (p.P175L) alteration is located in exon 8 (coding exon 8) of the SSBP3 gene. This alteration results from a C to T substitution at nucleotide position 524, causing the proline (P) at amino acid position 175 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	0.24
BayesDel_addAF	Pathogenic	0.35	D
BayesDel_noAF	Pathogenic	0.26
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Benign	0.15	T;.;D;.;.;.;.
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.89	D;D;D;D;D;D;D
M_CAP	Benign	0.025	D
MetaRNN	Uncertain	0.70	D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.12	T
MutationAssessor	Uncertain	2.3	.;.;M;.;.;.;.
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-9.0	.;D;D;D;D;D;D
REVEL	Uncertain	0.35
Sift	Uncertain	0.0010	.;D;D;D;D;D;D
Sift4G	Benign	0.078	T;T;T;T;T;D;D
Polyphen		0.81, 1.0	.;.;P;D;D;.;.
Vest4		0.82, 0.79, 0.79, 0.76
MutPred		0.41		.;.;Gain of stability (P = 0.0068);.;.;.;.;
MVP		0.32
MPC		2.1
ClinPred		1.0	D
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.7
Varity_R		0.82
gMVP		0.61

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1295601669; hg19: chr1-54717517;