rs1555696536

Variant names:

• chr19-13025192-A-ATC
• rs1555696536
• NM_001365902.3:c.200_201dupTC

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_001365902.3(NFIX):​c.200_201dupTC​(p.Lys68SerfsTer27) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NFIX NM_001365902.3 frameshift
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.97
• Publications: 1 publications found

Genes affected

NFIX (HGNC:7788): (nuclear factor I X) The protein encoded by this gene is a transcription factor that binds the palindromic sequence 5'-TTGGCNNNNNGCCAA-3 in viral and cellular promoters. The encoded protein can also stimulate adenovirus replication in vitro. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2012]

NFIX Gene-Disease associations (from GenCC):

• Malan overgrowth syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen, Illumina, Ambry Genetics
• Marshall-Smith syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Illumina, ClinGen, Orphanet, Ambry Genetics

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001365902.3. 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
	NFIX	NM_001365902.3	MANE Select	c.200_201dupTC	p.Lys68SerfsTer27	frameshift	Exon 2 of 11	NP_001352831.1
	NFIX	NM_001378405.1		c.248_249dupTC	p.Lys84SerfsTer27	frameshift	Exon 2 of 11	NP_001365334.1
	NFIX	NM_001271043.2		c.224_225dupTC	p.Lys76SerfsTer27	frameshift	Exon 2 of 11	NP_001257972.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NFIX	ENST00000592199.6	TSL:5 MANE Select	c.200_201dupTC	p.Lys68SerfsTer27	frameshift	Exon 2 of 11	ENSP00000467512.1
	NFIX	ENST00000587260.1	TSL:1	c.197_198dupTC	p.Lys67SerfsTer27	frameshift	Exon 1 of 9	ENSP00000467785.1
	NFIX	ENST00000587760.5	TSL:1	c.176_177dupTC	p.Lys60SerfsTer27	frameshift	Exon 2 of 10	ENSP00000466389.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		8.0
Mutation Taster		=0/200	disease causing (fs/PTC)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1555696536; hg19: chr19-13136006;