Genetic Variant MLLT1:p.Ala330Ser (chr19-6222243-C-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_005934.4(MLLT1):c.988G>T(p.Ala330Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000279 in 1,613,126 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 1 hom. )

Consequence

MLLT1
NM_005934.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.606

Variant links:

Genes affected

MLLT1 (HGNC:7134): (MLLT1 super elongation complex subunit) Predicted to be involved in regulation of transcription, DNA-templated. Predicted to act upstream of or within negative regulation of protein kinase activity. Located in cytosol; fibrillar center; and nucleoplasm. Part of transcription elongation factor complex. [provided by Alliance of Genome Resources, Apr 2022]

MLLT1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.024971306).

BS2

High AC in GnomAd4 at 19 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MLLT1	NM_005934.4 link	c.988G>T	p.Ala330Ser	missense_variant	Exon 6 of 12	ENST00000252674.9	NP_005925.2	Q03111

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MLLT1	ENST00000252674.9 link	c.988G>T	p.Ala330Ser	missense_variant	Exon 6 of 12	1	NM_005934.4	ENSP00000252674.6		Q03111

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152148

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000435

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD3 exomes

AF:

0.0000482

AC:

AN:

248738

Hom.:

AF XY:

0.0000445

AC XY:

AN XY:

134894

show subpopulations

Gnomad AFR exome

AF:

0.000624

Gnomad AMR exome

AF:

0.0000581

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1460860

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

726766

show subpopulations

Gnomad4 AFR exome

AF:

0.000718

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000125

AC:

AN:

152266

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74464

show subpopulations

Gnomad4 AFR

AF:

0.000433

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000132

ExAC

AF:

0.0000577

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.988G>T (p.A330S) alteration is located in exon 6 (coding exon 6) of the MLLT1 gene. This alteration results from a G to T substitution at nucleotide position 988, causing the alanine (A) at amino acid position 330 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.55

CADD

Benign

9.0

DANN

Benign

0.95

DEOGEN2

Benign

0.22

Eigen

Benign

-0.62

Eigen_PC

Benign

-0.55

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.56

M_CAP

Benign

0.0054

MetaRNN

Benign

0.025

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.11

REVEL

Benign

0.018

Sift

Benign

0.10

Sift4G

Benign

0.83

Polyphen

0.0010

Vest4

0.057

MVP

0.34

MPC

0.30

ClinPred

0.023

GERP RS

0.54

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.029

gMVP

0.081

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over