17-31095020-TGTGGGGAGACGGCGCTA-T

Position:

• chr17-31095020-TGTGGGGAGACGGCGCTA-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001042492.3(NF1):​c.-280_-264del variant causes a 5 prime UTR change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 30)
• Consequence: NF1 NM_001042492.3 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.96

Genes affected

NF1 (HGNC:7765): (neurofibromin 1) This gene product appears to function as a negative regulator of the ras signal transduction pathway. Mutations in this gene have been linked to neurofibromatosis type 1, juvenile myelomonocytic leukemia and Watson syndrome. The mRNA for this gene is subject to RNA editing (CGA>UGA->Arg1306Term) resulting in premature translation termination. Alternatively spliced transcript variants encoding different isoforms have also been described for this gene. [provided by RefSeq, Jul 2008]

MIR4733HG (HGNC:55332): (MIR4733 host gene)

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NF1	NM_001042492.3	c.-280_-264del		5_prime_UTR_variant	1/58	ENST00000358273.9	NP_001035957.1
NF1	NM_000267.3	c.-280_-264del		5_prime_UTR_variant	1/57		NP_000258.1
NF1	NM_001128147.3	c.-280_-264del		5_prime_UTR_variant	1/15		NP_001121619.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NF1	ENST00000358273.9	c.-280_-264del		5_prime_UTR_variant	1/58	1	NM_001042492.3	ENSP00000351015	P1
MIR4733HG	ENST00000583377.1	n.224+190_224+206del		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes Cov.: 30

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 30

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Neurofibromatosis, type 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 28, 2023

This variant occurs in a non-coding region of the NF1 gene. It does not change the encoded amino acid sequence of the NF1 protein. This variant is not present in population databases (gnomAD no frequency). This variant has been observed in individual(s) with clinical features of neurofibromatosis type 1 (Invitae). ClinVar contains an entry for this variant (Variation ID: 1380660). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Splicing

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: chr17-29422038;