NM_001083962.2:c.1871A>C

Variant names:

• chr18-55228855-T-G
• rs797046034
• NM_001083962.2:c.1871A>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Moderate PP5_Moderate

The NM_001083962.2(TCF4):​c.1871A>C​(p.Gln624Pro) 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 Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TCF4 NM_001083962.2 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 8.02
• Publications: 0 publications found

Genes affected

TCF4 (HGNC:11634): (transcription factor 4) This gene encodes transcription factor 4, a basic helix-loop-helix transcription factor. The encoded protein recognizes an Ephrussi-box ('E-box') binding site ('CANNTG') - a motif first identified in immunoglobulin enhancers. This gene is broadly expressed, and may play an important role in nervous system development. Defects in this gene are a cause of Pitt-Hopkins syndrome. In addition, an intronic CTG repeat normally numbering 10-37 repeat units can expand to >50 repeat units and cause Fuchs endothelial corneal dystrophy. Multiple alternatively spliced transcript variants that encode different proteins have been described. [provided by RefSeq, Jul 2016]

TCF4 Gene-Disease associations (from GenCC):

• Pitt-Hopkins syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P, ClinGen
• corneal dystrophy, Fuchs endothelial, 3

  Inheritance: AD Classification: STRONG Submitted by: G2P
• autosomal dominant non-syndromic intellectual disability

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Fuchs' endothelial dystrophy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autism spectrum disorder

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• intellectual disability

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.896
• PP5: Variant 18-55228855-T-G is Pathogenic according to our data. Variant chr18-55228855-T-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 212378.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001083962.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TCF4	NM_001083962.2	MANE Select	c.1871A>C	p.Gln624Pro	missense	Exon 18 of 20	NP_001077431.1
	TCF4	NM_001243226.3		c.2177A>C	p.Gln726Pro	missense	Exon 19 of 21	NP_001230155.2
	TCF4	NM_001243228.2		c.1889A>C	p.Gln630Pro	missense	Exon 18 of 20	NP_001230157.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TCF4	ENST00000354452.8	TSL:5 MANE Select	c.1871A>C	p.Gln624Pro	missense	Exon 18 of 20	ENSP00000346440.3
	TCF4	ENST00000398339.5	TSL:1	c.2177A>C	p.Gln726Pro	missense	Exon 19 of 21	ENSP00000381382.1
	TCF4	ENST00000356073.8	TSL:1	c.1859A>C	p.Gln620Pro	missense	Exon 18 of 20	ENSP00000348374.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000107 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Pitt-Hopkins syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.56	D
BayesDel_noAF	Pathogenic	0.56
CADD	Pathogenic	33
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.50	T
Eigen	Pathogenic	0.70
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.91	D
M_CAP	Pathogenic	0.66	D
MetaRNN	Pathogenic	0.90	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		8.0
PrimateAI	Pathogenic	0.86	D
PROVEAN	Pathogenic	-5.6	D
REVEL	Pathogenic	0.92
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.93	P
Vest4		0.92
MutPred		0.56		Loss of MoRF binding (P = 0.0721)
MVP		0.99
MPC		2.6
ClinPred		1.0	D
GERP RS		4.5
PromoterAI		0.038	Neutral
Varity_R		0.99
gMVP		1.0

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

Other links and lift over

dbSNP: rs797046034; hg19: chr18-52896086;