chr19-5654148-C-G

Variant names:

• chr19-5654148-C-G
• rs773807779
• NM_001201338.2:c.1614C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001201338.2(SAFB):​c.1614C>G​(p.Asp538Glu) 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. 15/22 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 nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SAFB NM_001201338.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.30
• Publications: 0 publications found

Genes affected

SAFB (HGNC:10520): (scaffold attachment factor B) This gene encodes a DNA-binding protein which has high specificity for scaffold or matrix attachment region DNA elements (S/MAR DNA). This protein is thought to be involved in attaching the base of chromatin loops to the nuclear matrix but there is conflicting evidence as to whether this protein is a component of chromatin or a nuclear matrix protein. Scaffold attachment factors are a specific subset of nuclear matrix proteins (NMP) that specifically bind to S/MAR. The encoded protein is thought to serve as a molecular base to assemble a 'transcriptosome complex' in the vicinity of actively transcribed genes. It is involved in the regulation of heat shock protein 27 transcription, can act as an estrogen receptor co-repressor and is a candidate for breast tumorigenesis. This gene is arranged head-to-head with a similar gene whose product has the same functions. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jan 2011]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04326862).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001201338.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SAFB	NM_001201338.2	MANE Select	c.1614C>G	p.Asp538Glu	missense	Exon 12 of 21	NP_001188267.1
	SAFB	NM_001201339.2		c.1614C>G	p.Asp538Glu	missense	Exon 12 of 21	NP_001188268.1
	SAFB	NM_002967.4		c.1614C>G	p.Asp538Glu	missense	Exon 12 of 21	NP_002958.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SAFB	ENST00000588852.2	TSL:1 MANE Select	c.1614C>G	p.Asp538Glu	missense	Exon 12 of 21	ENSP00000467423.1
	SAFB	ENST00000592224.5	TSL:1	c.1614C>G	p.Asp538Glu	missense	Exon 12 of 21	ENSP00000464840.1
	SAFB	ENST00000292123.9	TSL:1	c.1614C>G	p.Asp538Glu	missense	Exon 12 of 21	ENSP00000292123.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.083
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.71
CADD	Benign	8.4
DANN	Benign	0.95
DEOGEN2	Benign	0.12	T
Eigen	Benign	-0.87
Eigen_PC	Benign	-0.95
FATHMM_MKL	Benign	0.013	N
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.043	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	1.1	L
PhyloP100		-1.3
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.093
Sift	Benign	0.15	T
Sift4G	Benign	0.24	T
Polyphen		0.063	B
Vest4		0.062
MutPred		0.16		Gain of methylation at K537 (P = 0.1028)
MVP		0.32
MPC		0.93
ClinPred		0.20	T
GERP RS		-4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.051
gMVP		0.058
Mutation Taster		=92/8	polymorphism

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: rs773807779; hg19: chr19-5654159;