chr17-2613678-G-GAAGC

Position:

• chr17-2613678-G-GAAGC

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_Moderate BS1 BS2

The NM_000430.4(PAFAH1B1):​c.-191+19673_-191+19676dup variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00116 in 283,554 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.0021 (1 hom., cov: 32)
  • Exomes 𝑓: 0.00011 (0 hom.)
• Consequence: PAFAH1B1 NM_000430.4 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.689

Genes affected

PAFAH1B1 (HGNC:8574): (platelet activating factor acetylhydrolase 1b regulatory subunit 1) This locus was identified as encoding a gene that when mutated or lost caused the lissencephaly associated with Miller-Dieker lissencephaly syndrome. This gene encodes the non-catalytic alpha subunit of the intracellular Ib isoform of platelet-activating factor acteylhydrolase, a heterotrimeric enzyme that specifically catalyzes the removal of the acetyl group at the SN-2 position of platelet-activating factor (identified as 1-O-alkyl-2-acetyl-sn-glyceryl-3-phosphorylcholine). Two other isoforms of intracellular platelet-activating factor acetylhydrolase exist: one composed of multiple subunits, the other, a single subunit. In addition, a single-subunit isoform of this enzyme is found in serum. [provided by RefSeq, Apr 2009]

SAMD11P1 (HGNC:44473): (sterile alpha motif domain containing 11 pseudogene 1)

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP6: Variant 17-2613678-G-GAAGC is Benign according to our data. Variant chr17-2613678-G-GAAGC is described in ClinVar as [Benign]. Clinvar id is 2647221.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00205 (313/152338) while in subpopulation AFR AF= 0.00726 (302/41586). AF 95% confidence interval is 0.00659. There are 1 homozygotes in gnomad4. There are 160 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 313 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PAFAH1B1	NM_000430.4	c.-191+19673_-191+19676dup		intron_variant		ENST00000397195.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PAFAH1B1	ENST00000397195.10	c.-191+19673_-191+19676dup		intron_variant		1	NM_000430.4	P1
SAMD11P1	ENST00000571429.2	n.266_267insGCTT		non_coding_transcript_exon_variant	1/1

Frequencies

GnomAD3 genomes AF: 0.00206 AC: 313 AN: 152220 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00728

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000393

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00143

GnomAD4 exome AF: 0.000114 AC: 15 AN: 131216 Hom.: 0 Cov.: 0 AF XY: 0.0000986 AC XY: 7 AN XY: 71000

Gnomad4 AFR exome AF: 0.00319

Gnomad4 AMR exome AF: 0.000313

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.000282

GnomAD4 genome AF: 0.00205 AC: 313 AN: 152338 Hom.: 1 Cov.: 32 AF XY: 0.00215 AC XY: 160 AN XY: 74496

Gnomad4 AFR AF: 0.00726

Gnomad4 AMR AF: 0.000392

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00142

Alfa AF: 0.00164 Hom.: 0

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Sep 01, 2022

PAFAH1B1: BS1, BS2 -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs553909283; hg19: chr17-2516972;