NM_001136472.2:c.226G>T

Variant names:

• chr16-11553684-C-A
• rs371334679
• NM_001136472.2:c.226G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001136472.2(LITAF):​c.226G>T​(p.Val76Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V76M) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: LITAF NM_001136472.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.69
• Publications: 4 publications found

Genes affected

LITAF (HGNC:16841): (lipopolysaccharide induced TNF factor) Lipopolysaccharide is a potent stimulator of monocytes and macrophages, causing secretion of tumor necrosis factor-alpha (TNF-alpha) and other inflammatory mediators. This gene encodes lipopolysaccharide-induced TNF-alpha factor, which is a DNA-binding protein and can mediate the TNF-alpha expression by direct binding to the promoter region of the TNF-alpha gene. The transcription of this gene is induced by tumor suppressor p53 and has been implicated in the p53-induced apoptotic pathway. Mutations in this gene cause Charcot-Marie-Tooth disease type 1C (CMT1C) and may be involved in the carcinogenesis of extramammary Paget's disease (EMPD). Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Dec 2014]

LITAF Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease type 1C

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
• Charcot-Marie-Tooth disease

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001136472.2. 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
	LITAF	NM_001136472.2	MANE Select	c.226G>T	p.Val76Leu	missense	Exon 3 of 4	NP_001129944.1	Q99732-1
	LITAF	NM_004862.4		c.226G>T	p.Val76Leu	missense	Exon 3 of 4	NP_004853.2	Q99732-1
	LITAF	NM_001136473.1		c.226G>T	p.Val76Leu	missense	Exon 3 of 5	NP_001129945.1	Q99732-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LITAF	ENST00000622633.5	TSL:1 MANE Select	c.226G>T	p.Val76Leu	missense	Exon 3 of 4	ENSP00000483114.1	Q99732-1
	LITAF	ENST00000339430.9	TSL:1	c.226G>T	p.Val76Leu	missense	Exon 3 of 4	ENSP00000340118.5	Q99732-1
	LITAF	ENST00000570904.5	TSL:1	c.226G>T	p.Val76Leu	missense	Exon 3 of 4	ENSP00000459138.1	Q99732-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Charcot-Marie-Tooth disease type 1C (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.51
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.060
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.43	T
Eigen	Benign	0.082
Eigen_PC	Benign	0.085
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Benign	0.82	T
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.71	D
MetaSVM	Uncertain	0.095	D
MutationAssessor	Benign	2.0	M
PhyloP100		5.7
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-1.5	N
REVEL	Uncertain	0.55
Sift	Uncertain	0.022	D
Sift4G	Uncertain	0.029	D
Polyphen		0.41	B
Vest4		0.71
MutPred		0.67		Loss of glycosylation at T75 (P = 0.0916)
MVP		0.93
MPC		0.27
ClinPred		0.84	D
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.11
gMVP		0.68

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs371334679; hg19: chr16-11647540;