NM_006790.3:c.1345C>G

Variant names:

• chr5-137887233-C-G
• rs766650528
• NM_006790.3:c.1345C>G

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Moderate BS1 BS2

The NM_006790.3(MYOT):​c.1345C>G​(p.Pro449Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000991 in 1,613,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.000079 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00010 (0 hom.)
• Consequence: MYOT NM_006790.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 5.43
• Publications: 1 publications found

Genes affected

MYOT (HGNC:12399): (myotilin) This gene encodes a cystoskeletal protein which plays a significant role in the stability of thin filaments during muscle contraction. This protein binds F-actin, crosslinks actin filaments, and prevents latrunculin A-induced filament disassembly. Mutations in this gene have been associated with limb-girdle muscular dystrophy and myofibrillar myopathies. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been determined.[provided by RefSeq, Oct 2008]

PKD2L2-DT (HGNC:55557): (PKD2L2 divergent transcript)

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.23472294).
• BS1: Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.0000789 (12/152126) while in subpopulation AMR AF = 0.000458 (7/15278). AF 95% confidence interval is 0.000215. There are 0 homozygotes in GnomAd4. There are 9 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 12 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006790.3. 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
	MYOT	NM_006790.3	MANE Select	c.1345C>G	p.Pro449Ala	missense	Exon 10 of 10	NP_006781.1	A0A0C4DFM5
	MYOT	NM_001300911.2		c.1000C>G	p.Pro334Ala	missense	Exon 11 of 11	NP_001287840.1	B4DT68
	MYOT	NM_001135940.2		c.793C>G	p.Pro265Ala	missense	Exon 10 of 10	NP_001129412.1	Q9UBF9-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYOT	ENST00000239926.9	TSL:1 MANE Select	c.1345C>G	p.Pro449Ala	missense	Exon 10 of 10	ENSP00000239926.4	A0A0C4DFM5
	MYOT	ENST00000968642.1		c.1342C>G	p.Pro448Ala	missense	Exon 10 of 10	ENSP00000638701.1
	MYOT	ENST00000968644.1		c.1207C>G	p.Pro403Ala	missense	Exon 8 of 8	ENSP00000638703.1

Frequencies

GnomAD3 genomes AF: 0.0000789 AC: 12 AN: 152126 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000458

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: 0.0000735

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000437 AC: 11 AN: 251444 AF XY: 0.0000515

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000202

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000101 AC: 148 AN: 1461758 Hom.: 0 Cov.: 31 AF XY: 0.0000866 AC XY: 63 AN XY: 727174

African (AFR) AF: 0.00 AC: 0 AN: 33470

American (AMR) AF: 0.000157 AC: 7 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39668

South Asian (SAS) AF: 0.00 AC: 0 AN: 86246

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: 0.000121 AC: 135 AN: 1111954

Other (OTH) AF: 0.0000994 AC: 6 AN: 60392

GnomAD4 genome AF: 0.0000789 AC: 12 AN: 152126 Hom.: 0 Cov.: 32 AF XY: 0.000121 AC XY: 9 AN XY: 74320

African (AFR) AF: 0.00 AC: 0 AN: 41386

American (AMR) AF: 0.000458 AC: 7 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10600

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

European-Non Finnish (NFE) AF: 0.0000735 AC: 5 AN: 68046

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000847 Hom.: 0

Bravo AF: 0.0000869

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ExAC AF: 0.0000494 AC: 6

EpiCase AF: 0.000273

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Inborn genetic diseases (1)
-	1	-	Myofibrillar myopathy 3 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	21
DANN	Uncertain	0.99
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.84	T
M_CAP	Benign	0.026	D
MetaRNN	Benign	0.23	T
MetaSVM	Benign	-0.62	T
PhyloP100		5.4
PrimateAI	Uncertain	0.50	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.19
Sift	Uncertain	0.023	D
Sift4G	Benign	0.12	T
Vest4		0.27
MVP		0.90
MPC		0.17
ClinPred		0.20	T
GERP RS		5.8
gMVP		0.42
Mutation Taster		=40/60	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs766650528; hg19: chr5-137222922;