19-39370075-CC-GT

Variant names:

• chr19-39370075-CC-GT
• NM_001384574.2:c.617_618delCCinsGT
• SAMD4B p.Ser206Cys

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001384574.2(SAMD4B):​c.617_618delCCinsGT​(p.Ser206Cys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. 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: SAMD4B NM_001384574.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.63
• Publications: 0 publications found

Genes affected

SAMD4B (HGNC:25492): (sterile alpha motif domain containing 4B) Enables RNA binding activity. Predicted to be involved in nuclear-transcribed mRNA poly(A) tail shortening. Predicted to act upstream of or within cerebellar neuron development. Located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001384574.2. 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
	SAMD4B	NM_001384574.2	MANE Select	c.617_618delCCinsGT	p.Ser206Cys	missense	N/A	NP_001371503.1	Q5PRF9
	SAMD4B	NM_001384565.1		c.617_618delCCinsGT	p.Ser206Cys	missense	N/A	NP_001371494.1	Q5PRF9
	SAMD4B	NM_001384566.1		c.617_618delCCinsGT	p.Ser206Cys	missense	N/A	NP_001371495.1	Q5PRF9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SAMD4B	ENST00000610417.5	TSL:2 MANE Select	c.617_618delCCinsGT	p.Ser206Cys	missense	N/A	ENSP00000484229.1	Q5PRF9
	SAMD4B	ENST00000314471.10	TSL:1	c.617_618delCCinsGT	p.Ser206Cys	missense	N/A	ENSP00000317224.5	Q5PRF9
	SAMD4B	ENST00000598913.5	TSL:1	c.617_618delCCinsGT	p.Ser206Cys	missense	N/A	ENSP00000470237.1	M0QZ22

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		5.6

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr19-39860715;