NM_002691.4:c.840+10_840+19delTTCCCAGGGC

Variant names:

• chr19-50402538-GCAGGGCTTCC-G
• rs770291150
• NM_002691.4:c.840+10_840+19delTTCCCAGGGC

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP6_Moderate

The NM_002691.4(POLD1):​c.840+10_840+19delTTCCCAGGGC variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000277 in 1,441,908 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000028 (0 hom.)
• Consequence: POLD1 NM_002691.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:2
• Conservation: PhyloP100: 0.931
• Publications: 0 publications found

Genes affected

POLD1 (HGNC:9175): (DNA polymerase delta 1, catalytic subunit) This gene encodes the 125-kDa catalytic subunit of DNA polymerase delta. DNA polymerase delta possesses both polymerase and 3' to 5' exonuclease activity and plays a critical role in DNA replication and repair. Alternatively spliced transcript variants have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 6. [provided by RefSeq, Mar 2012]

POLD1 Gene-Disease associations (from GenCC):

• POLD1-related polyposis and colorectal cancer syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• colorectal cancer, susceptibility to, 10

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
• mandibular hypoplasia-deafness-progeroid syndrome

  Inheritance: AD, AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Genomics England PanelApp, Ambry Genetics, Orphanet, G2P
• Polymerase proofreading-related adenomatous polyposis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• immunodeficiency 120

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
• non-severe combined immunodeficiency due to polymerase delta deficiency

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 19-50402538-GCAGGGCTTCC-G is Benign according to our data. Variant chr19-50402538-GCAGGGCTTCC-G is described in ClinVar as Likely_benign. ClinVar VariationId is 414791.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002691.4. 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
	POLD1	NM_002691.4	MANE Select	c.840+10_840+19delTTCCCAGGGC		intron	N/A	NP_002682.2
	POLD1	NM_001308632.1		c.840+10_840+19delTTCCCAGGGC		intron	N/A	NP_001295561.1
	POLD1	NM_001256849.1		c.840+10_840+19delTTCCCAGGGC		intron	N/A	NP_001243778.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POLD1	ENST00000440232.7	TSL:1 MANE Select	c.840+4_840+13delCAGGGCTTCC		splice_region intron	N/A	ENSP00000406046.1
	POLD1	ENST00000595904.6	TSL:1	c.840+4_840+13delCAGGGCTTCC		splice_region intron	N/A	ENSP00000472445.1
	POLD1	ENST00000599857.7	TSL:1	c.840+4_840+13delCAGGGCTTCC		splice_region intron	N/A	ENSP00000473052.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000142 AC: 3 AN: 211496 AF XY: 0.00000877

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000993

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000277 AC: 4 AN: 1441908 Hom.: 0 AF XY: 0.00000280 AC XY: 2 AN XY: 715540

African (AFR) AF: 0.00 AC: 0 AN: 33052

American (AMR) AF: 0.0000724 AC: 3 AN: 41428

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25648

East Asian (EAS) AF: 0.00 AC: 0 AN: 38678

South Asian (SAS) AF: 0.00 AC: 0 AN: 83392

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51780

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5572

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1102730

Other (OTH) AF: 0.0000168 AC: 1 AN: 59628

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

Submissions by phenotype

Colorectal cancer, susceptibility to, 10 Benign:2

Mar 12, 2018

Counsyl

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com.

Nov 13, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.93

Splicing

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

Other links and lift over

dbSNP: rs770291150; hg19: chr19-50905795;