NM_005263.5:c.925-30_925-5dupCTCTCTCTCTCTCTCTCTCTCTCTCT

Variant names:

• chr1-92478757-C-CAGAGAGAGAGAGAGAGAGAGAGAGAG
• rs35896485
• NM_005263.5:c.925-30_925-5dupCTCTCTCTCTCTCTCTCTCTCTCTCT

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP6_Moderate

The NM_005263.5(GFI1):​c.925-30_925-5dupCTCTCTCTCTCTCTCTCTCTCTCTCT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. It is difficult to determine the true allele frequency of this variant because it is of type INS_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. 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 Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0000072 (0 hom., cov: 0)
  • Exomes 𝑓: 0.0000043 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: GFI1 NM_005263.5 splice_region, intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 3.17
• Publications: 2 publications found

Genes affected

GFI1 (HGNC:4237): (growth factor independent 1 transcriptional repressor) This gene encodes a nuclear zinc finger protein that functions as a transcriptional repressor. This protein plays a role in diverse developmental contexts, including hematopoiesis and oncogenesis. It functions as part of a complex along with other cofactors to control histone modifications that lead to silencing of the target gene promoters. Mutations in this gene cause autosomal dominant severe congenital neutropenia, and also dominant nonimmune chronic idiopathic neutropenia of adults, which are heterogeneous hematopoietic disorders that cause predispositions to leukemias and infections. Multiple alternatively spliced variants, encoding the same protein, have been identified for this gene. [provided by RefSeq, Jul 2008]

GFI1 Gene-Disease associations (from GenCC):

• neutropenia, severe congenital, 2, autosomal dominant

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• severe congenital neutropenia

  Inheritance: AD Classification: MODERATE Submitted by: Illumina
• autosomal dominant severe congenital neutropenia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP6: Variant 1-92478757-C-CAGAGAGAGAGAGAGAGAGAGAGAGAG is Benign according to our data. Variant chr1-92478757-C-CAGAGAGAGAGAGAGAGAGAGAGAGAG is described in ClinVar as Likely_benign. ClinVar VariationId is 1616579.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005263.5. 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
	GFI1	NM_005263.5	MANE Select	c.925-30_925-5dupCTCTCTCTCTCTCTCTCTCTCTCTCT		splice_region intron	N/A	NP_005254.2	Q99684
	GFI1	NM_001127215.3		c.925-30_925-5dupCTCTCTCTCTCTCTCTCTCTCTCTCT		splice_region intron	N/A	NP_001120687.1	Q99684
	GFI1	NM_001127216.3		c.925-30_925-5dupCTCTCTCTCTCTCTCTCTCTCTCTCT		splice_region intron	N/A	NP_001120688.1	Q99684

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GFI1	ENST00000294702.6	TSL:2 MANE Select	c.925-5_925-4insCTCTCTCTCTCTCTCTCTCTCTCTCT		splice_region intron	N/A	ENSP00000294702.5	Q99684
	GFI1	ENST00000370332.5	TSL:1	c.925-5_925-4insCTCTCTCTCTCTCTCTCTCTCTCTCT		splice_region intron	N/A	ENSP00000359357.1	Q99684
	GFI1	ENST00000427103.6	TSL:1	c.925-5_925-4insCTCTCTCTCTCTCTCTCTCTCTCTCT		splice_region intron	N/A	ENSP00000399719.1	Q99684

Frequencies

GnomAD3 genomes AF: 0.00000724 AC: 1 AN: 138180 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.0000279

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000434 AC: 6 AN: 1382642 Hom.: 0 Cov.: 0 AF XY: 0.00000291 AC XY: 2 AN XY: 686990

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

African (AFR) AF: 0.000159 AC: 5 AN: 31418

American (AMR) AF: 0.00 AC: 0 AN: 39118

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25004

East Asian (EAS) AF: 0.00 AC: 0 AN: 36412

South Asian (SAS) AF: 0.00 AC: 0 AN: 79500

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 47858

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4180

European-Non Finnish (NFE) AF: 9.42e-7 AC: 1 AN: 1061794

Other (OTH) AF: 0.00 AC: 0 AN: 57358

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000102361), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000724 AC: 1 AN: 138180 Hom.: 0 Cov.: 0 AF XY: 0.0000151 AC XY: 1 AN XY: 66324

African (AFR) AF: 0.0000279 AC: 1 AN: 35850

American (AMR) AF: 0.00 AC: 0 AN: 14098

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3358

East Asian (EAS) AF: 0.00 AC: 0 AN: 4546

South Asian (SAS) AF: 0.00 AC: 0 AN: 3888

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 8584

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 292

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 64810

Other (OTH) AF: 0.00 AC: 0 AN: 1910

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Neutropenia, severe congenital, 2, autosomal dominant (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.2

Splicing

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

Other links and lift over

dbSNP: rs35896485; hg19: chr1-92944314;