chr4-169991884-G-T

Position:

• chr4-169991884-G-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_021647.8(MFAP3L):​c.724C>A​(p.Pro242Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MFAP3L NM_021647.8 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 10.0

Genes affected

MFAP3L (HGNC:29083): (microfibril associated protein 3 like) Located in several cellular components, including cell junction; nucleoplasm; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

(HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.944

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MFAP3L	NM_021647.8	c.724C>A	p.Pro242Thr	missense_variant	3/3	ENST00000361618.4	NP_067679.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MFAP3L	ENST00000361618.4	c.724C>A	p.Pro242Thr	missense_variant	3/3	1	NM_021647.8	ENSP00000354583	P1
MFAP3L	ENST00000393704.3	c.415C>A	p.Pro139Thr	missense_variant	2/2	1		ENSP00000377307
	ENST00000508955.2	n.298+1415G>T		intron_variant, non_coding_transcript_variant		3
MFAP3L	ENST00000512698.1	c.415C>A	p.Pro139Thr	missense_variant	2/2	3		ENSP00000422791

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 13, 2023

The c.724C>A (p.P242T) alteration is located in exon 3 (coding exon 2) of the MFAP3L gene. This alteration results from a C to A substitution at nucleotide position 724, causing the proline (P) at amino acid position 242 to be replaced by a threonine (T). 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	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.50	.;D;.
Eigen	Pathogenic	0.74
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.97	D;D;D
M_CAP	Pathogenic	0.37	D
MetaRNN	Pathogenic	0.94	D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.2	.;M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.85	D
PROVEAN	Uncertain	-4.4	D;D;D
REVEL	Pathogenic	0.78
Sift	Uncertain	0.0020	.;D;D
Sift4G	Pathogenic	0.0	D;D;.
Polyphen		1.0	.;D;.
Vest4		0.81
MutPred		0.82		.;Loss of glycosylation at P245 (P = 0.0357);.;
MVP		0.86
MPC		1.3
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.53
gMVP		0.76

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-170913035;