chr18-49843388-C-G

Variant names:

• chr18-49843388-C-G
• rs2276170
• NM_001080467.3:c.4464G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001080467.3(MYO5B):​c.4464G>C​(p.Leu1488Phe) 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 1,613,922 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L1488L) has been classified as Benign.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MYO5B NM_001080467.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.750
• Publications: 14 publications found

Genes affected

MYO5B (HGNC:7603): (myosin VB) The protein encoded by this gene, together with other proteins, may be involved in plasma membrane recycling. Mutations in this gene are associated with microvillous inclusion disease. [provided by RefSeq, Sep 2009]

SNHG22 (HGNC:50285): (small nucleolar RNA host gene 22)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001080467.3. 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
	MYO5B	NM_001080467.3	MANE Select	c.4464G>C	p.Leu1488Phe	missense	Exon 34 of 40	NP_001073936.1	Q9ULV0-1
	SNHG22	NR_117096.1		n.192+2963C>G		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYO5B	ENST00000285039.12	TSL:1 MANE Select	c.4464G>C	p.Leu1488Phe	missense	Exon 34 of 40	ENSP00000285039.6	Q9ULV0-1
	MYO5B	ENST00000592688.1	TSL:1	c.174G>C	p.Leu58Phe	missense	Exon 3 of 9	ENSP00000466368.1	Q9ULV0-3
	MYO5B	ENST00000697219.1		c.4197G>C	p.Leu1399Phe	missense	Exon 32 of 38	ENSP00000513188.1	A0A8V8TM52

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152064 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000483

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461858 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727232

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53404

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112006

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152064 Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2 AN XY: 74266

African (AFR) AF: 0.0000483 AC: 2 AN: 41414

American (AMR) AF: 0.00 AC: 0 AN: 15262

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5170

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10592

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 1091

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Benign	0.31	T
Eigen	Uncertain	0.24
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Benign	0.72	D
LIST_S2	Benign	0.79	T
M_CAP	Benign	0.0084	T
MetaRNN	Uncertain	0.53	D
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	1.6	L
PhyloP100		0.75
PrimateAI	Benign	0.47	T
PROVEAN	Uncertain	-2.8	D
REVEL	Benign	0.074
Sift	Benign	0.076	T
Sift4G	Benign	0.089	T
Polyphen		0.82	P
Vest4		0.56
MutPred		0.43		Gain of methylation at K1489 (P = 0.0293)
MVP		0.49
MPC		0.45
ClinPred		0.96	D
GERP RS		4.9
Varity_R		0.42
gMVP		0.52
Mutation Taster		=81/19	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs2276170; hg19: chr18-47369758;