NM_001384574.2:c.542T>C

Variant names:

• chr19-39370000-T-C
• rs2077190423
• NM_001384574.2:c.542T>C

Variant summary

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

The NM_001384574.2(SAMD4B):​c.542T>C​(p.Leu181Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,613,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SAMD4B NM_001384574.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.84
• 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: 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=0.066969514).

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.542T>C	p.Leu181Pro	missense	Exon 4 of 14	NP_001371503.1	Q5PRF9
	SAMD4B	NM_001384565.1		c.542T>C	p.Leu181Pro	missense	Exon 4 of 14	NP_001371494.1	Q5PRF9
	SAMD4B	NM_001384566.1		c.542T>C	p.Leu181Pro	missense	Exon 5 of 15	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.542T>C	p.Leu181Pro	missense	Exon 4 of 14	ENSP00000484229.1	Q5PRF9
	SAMD4B	ENST00000314471.10	TSL:1	c.542T>C	p.Leu181Pro	missense	Exon 6 of 16	ENSP00000317224.5	Q5PRF9
	SAMD4B	ENST00000598913.5	TSL:1	c.542T>C	p.Leu181Pro	missense	Exon 3 of 13	ENSP00000470237.1	M0QZ22

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152132 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1460928 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726708

African (AFR) AF: 0.00 AC: 0 AN: 33446

American (AMR) AF: 0.00 AC: 0 AN: 44602

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26110

East Asian (EAS) AF: 0.00 AC: 0 AN: 39662

South Asian (SAS) AF: 0.00 AC: 0 AN: 86078

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53302

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111640

Other (OTH) AF: 0.00 AC: 0 AN: 60324

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152132 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74308

African (AFR) AF: 0.00 AC: 0 AN: 41420

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.058
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.0033	T
Eigen	Benign	-0.36
Eigen_PC	Benign	-0.12
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.0022	T
MetaRNN	Benign	0.067	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	-0.34	N
PhyloP100		1.8
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-0.68	N
REVEL	Benign	0.062
Sift	Benign	0.24	T
Sift4G	Benign	0.25	T
Polyphen		0.0	B
Vest4		0.34
MutPred		0.18		Gain of relative solvent accessibility (P = 0.005)
MVP		0.043
MPC		1.1
ClinPred		0.26	T
GERP RS		4.1
PromoterAI		-0.0088	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.078
gMVP		0.57
Mutation Taster		=57/43	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: rs2077190423; hg19: chr19-39860640;