17-31095058-G-GCC

Variant names:

• chr17-31095058-G-GCC
• rs886052786
• NM_001042492.3:c.-248_-247dupCC

Variant summary

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

The NM_001042492.3(NF1):​c.-248_-247dupCC variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. There is a variant allele frequency bias in the population database for this variant (GnomAdExome4), which may indicate mosaicism or somatic mutations in the reference population data. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00010 (0 hom., cov: 31)
  • Exomes 𝑓: 0.00015 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NF1 NM_001042492.3 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:4
• Conservation: PhyloP100: -0.297
• Publications: 0 publications found

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

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001042492.3. 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
	NF1	NM_001042492.3	MANE Select	c.-248_-247dupCC		5_prime_UTR	Exon 1 of 58	NP_001035957.1	P21359-1
	NF1	NM_000267.4		c.-248_-247dupCC		5_prime_UTR	Exon 1 of 57	NP_000258.1
	NF1	NM_001128147.3		c.-248_-247dupCC		5_prime_UTR	Exon 1 of 15	NP_001121619.1	P21359-5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NF1	ENST00000358273.9	TSL:1 MANE Select	c.-248_-247dupCC		5_prime_UTR	Exon 1 of 58	ENSP00000351015.4	P21359-1
	NF1	ENST00000356175.7	TSL:1	c.-248_-247dupCC		5_prime_UTR	Exon 1 of 57	ENSP00000348498.3	P21359-2
	NF1	ENST00000431387.8	TSL:1	c.-248_-247dupCC		5_prime_UTR	Exon 1 of 15	ENSP00000412921.4	P21359-5

Frequencies

GnomAD3 genomes AF: 0.000101 AC: 15 AN: 148626 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000745

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000269

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000487

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000449

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000146 AC: 60 AN: 410060 Hom.: 0 Cov.: 0 AF XY: 0.000163 AC XY: 35 AN XY: 214930

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 10126

American (AMR) AF: 0.000123 AC: 2 AN: 16246

Ashkenazi Jewish (ASJ) AF: 0.000240 AC: 3 AN: 12496

East Asian (EAS) AF: 0.00 AC: 0 AN: 27484

South Asian (SAS) AF: 0.000368 AC: 15 AN: 40768

European-Finnish (FIN) AF: 0.000138 AC: 4 AN: 28982

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1830

European-Non Finnish (NFE) AF: 0.000137 AC: 34 AN: 247940

Other (OTH) AF: 0.0000827 AC: 2 AN: 24188

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.000101 AC: 15 AN: 148726 Hom.: 0 Cov.: 31 AF XY: 0.0000552 AC XY: 4 AN XY: 72522

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000743 AC: 3 AN: 40394

American (AMR) AF: 0.000269 AC: 4 AN: 14866

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3426

East Asian (EAS) AF: 0.00 AC: 0 AN: 5028

South Asian (SAS) AF: 0.00 AC: 0 AN: 4712

European-Finnish (FIN) AF: 0.000487 AC: 5 AN: 10258

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000449 AC: 3 AN: 66802

Other (OTH) AF: 0.00 AC: 0 AN: 2056

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Café-au-lait macules with pulmonary stenosis (1)
-	1	-	Neurofibromatosis-Noonan syndrome (1)
-	1	-	Neurofibromatosis, familial spinal (1)
-	1	-	Neurofibromatosis, type 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.30
Mutation Taster		=296/4	polymorphism

Splicing

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

Other links and lift over

dbSNP: rs886052786; hg19: chr17-29422076;