Genetic Variant MYT1L:c.3420+45G>A (chr2-1792276-C-T) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_001329851.3(MYT1L):c.*33G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000677 in 1,556,300 control chromosomes in the GnomAD database, including 6 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0036 ( 4 hom., cov: 33)

Exomes 𝑓: 0.00036 ( 2 hom. )

Consequence

MYT1L
NM_001329851.3 3_prime_UTR

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.16

Publications

0 publications found

Variant links:

Genes affected

MYT1L (HGNC:7623): (myelin transcription factor 1 like) This gene encodes a member of the zinc finger superfamily of transcription factors whose expression, thus far, has been found only in neuronal tissues. The encoded protein belongs to a novel class of cystein-cystein-histidine-cystein zinc finger proteins that function in the developing mammalian central nervous system. Forced expression of this gene in combination with the basic helix-loop-helix transcription factor NeuroD1 and the transcription factors POU class 3 homeobox 2 and achaete-scute family basic helix-loop-helix transcription factor 1 can convert fetal and postnatal human fibroblasts into induced neuronal cells, which are able to generate action potentials. Mutations in this gene have been associated with an autosomal dominant form of cognitive disability and with autism spectrum disorder. Alternative splicing results in multiple variants. [provided by RefSeq, Jul 2017]

MYT1L Gene-Disease associations (from GenCC):

intellectual disability, autosomal dominant 39
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P
syndromic complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
syndromic intellectual disability
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MYT1L links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.79).

BP6

Variant 2-1792276-C-T is Benign according to our data. Variant chr2-1792276-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 1218776.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00356 (542/152340) while in subpopulation AFR AF = 0.0126 (526/41584). AF 95% confidence interval is 0.0118. There are 4 homozygotes in GnomAd4. There are 260 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 542 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001329851.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MYT1L	NM_001303052.2	MANE Select	c.3420+45G>A	intron	N/A	NP_001289981.1	Q9UL68-1
MYT1L	NM_001329851.3		c.*33G>A	3_prime_UTR	Exon 24 of 24	NP_001316780.1	A0A3B3ISW5
MYT1L	NM_001329852.3		c.*33G>A	3_prime_UTR	Exon 24 of 24	NP_001316781.1	A0A3B3IRM3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MYT1L	ENST00000647738.2	MANE Select	c.3420+45G>A	intron	N/A	ENSP00000497479.2	Q9UL68-1
MYT1L	ENST00000428368.7	TSL:1	c.3420+45G>A	intron	N/A	ENSP00000396103.3	Q9UL68-1
MYT1L	ENST00000399161.8	TSL:1	c.3414+45G>A	intron	N/A	ENSP00000382114.3	Q9UL68-4

Frequencies

GnomAD3 genomes

AF:

0.00357

AC:

543

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0127

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000844

AC:

154

AN:

182556

AF XY:

0.000717

show subpopulations

Gnomad AFR exome

AF:

0.0125

Gnomad AMR exome

AF:

0.000783

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000256

Gnomad OTH exome

AF:

0.000205

GnomAD4 exome

AF:

0.000365

AC:

512

AN:

1403960

Hom.:

Cov.:

AF XY:

0.000318

AC XY:

220

AN XY:

692528

show subpopulations

African (AFR)

AF:

0.0139

AC:

446

AN:

32168

American (AMR)

AF:

0.000798

AC:

AN:

37608

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24818

East Asian (EAS)

AF:

0.00

AC:

AN:

37102

South Asian (SAS)

AF:

0.0000125

AC:

AN:

79720

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49012

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4734

European-Non Finnish (NFE)

AF:

0.00000185

AC:

AN:

1080486

Other (OTH)

AF:

0.000566

AC:

AN:

58312

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

116

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00356

AC:

542

AN:

152340

Hom.:

Cov.:

AF XY:

0.00349

AC XY:

260

AN XY:

74494

show subpopulations

African (AFR)

AF:

0.0126

AC:

526

AN:

41584

American (AMR)

AF:

0.000588

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68028

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

114

143

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00211

Hom.:

Bravo

AF:

0.00442

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.79

CADD

Benign

5.8

(source)

DANN

Benign

0.66

PhyloP100

1.2

Mutation Taster

=100/0

polymorphism

(source)

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over