Genetic Variant MACF1:p.Ile1599Leu (chr1-39331383-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001394062.1(MACF1):c.4795A>T(p.Ile1599Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,838 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/18 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MACF1
NM_001394062.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0980

Publications

0 publications found

Variant links:

Genes affected

MACF1 (HGNC:13664): (microtubule actin crosslinking factor 1) This gene encodes a large protein containing numerous spectrin and leucine-rich repeat (LRR) domains. The encoded protein is a member of a family of proteins that form bridges between different cytoskeletal elements. This protein facilitates actin-microtubule interactions at the cell periphery and couples the microtubule network to cellular junctions. Alternative splicing results in multiple transcript variants, but the full-length nature of some of these variants has not been determined. [provided by RefSeq, May 2013]

MACF1 Gene-Disease associations (from GenCC):

lissencephaly 9 with complex brainstem malformation
Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia, Ambry Genetics
lissencephaly spectrum disorder with complex brainstem malformation
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
autosomal dominant nonsyndromic hearing loss
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

MACF1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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=0.027591467).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MACF1	NM_001394062.1 link	c.4795A>T	p.Ile1599Leu	missense_variant	Exon 37 of 101	ENST00000564288.6	NP_001380991.1
MACF1	NM_012090.5 link	c.4629+4030A>T		intron_variant	Intron 35 of 92		NP_036222.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MACF1	ENST00000564288.6 link	c.4795A>T	p.Ile1599Leu	missense_variant	Exon 37 of 101	5	NM_001394062.1	ENSP00000455274.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461838

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727226

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111994

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.049

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.58

CADD

Benign

(source)

DANN

Benign

0.68

DEOGEN2

Benign

0.031

T;T;T;.

Eigen

Benign

-1.9

Eigen_PC

Benign

-1.9

FATHMM_MKL

Benign

0.080

LIST_S2

Benign

0.67

T;T;T;T

M_CAP

Benign

0.0074

MetaRNN

Benign

0.028

T;T;T;T

MetaSVM

Benign

-0.96

PhyloP100

-0.098

PROVEAN

Benign

0.65

N;N;N;N

REVEL

Benign

0.13

Sift

Benign

1.0

T;T;T;T

Polyphen

0.0

.;B;.;.

Vest4

0.13

MutPred

0.64

.;Loss of helix (P = 0.079);.;.;

MVP

0.30

ClinPred

0.018

GERP RS

-7.8

Varity_R

0.023

Mutation Taster

=89/11

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over