chr17-68531661-T-C

Variant names:

• chr17-68531661-T-C
• rs8905
• NM_002734.5:c.*1212T>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_002734.5(PRKAR1A):​c.*1212T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000109 in 913,916 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000011 (0 hom.)
• Consequence: PRKAR1A NM_002734.5 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.884
• Publications: 0 publications found

Genes affected

PRKAR1A (HGNC:9388): (protein kinase cAMP-dependent type I regulatory subunit alpha) cAMP is a signaling molecule important for a variety of cellular functions. cAMP exerts its effects by activating the cAMP-dependent protein kinase, which transduces the signal through phosphorylation of different target proteins. The inactive kinase holoenzyme is a tetramer composed of two regulatory and two catalytic subunits. cAMP causes the dissociation of the inactive holoenzyme into a dimer of regulatory subunits bound to four cAMP and two free monomeric catalytic subunits. Four different regulatory subunits and three catalytic subunits have been identified in humans. This gene encodes one of the regulatory subunits. This protein was found to be a tissue-specific extinguisher that down-regulates the expression of seven liver genes in hepatoma x fibroblast hybrids. Mutations in this gene cause Carney complex (CNC). This gene can fuse to the RET protooncogene by gene rearrangement and form the thyroid tumor-specific chimeric oncogene known as PTC2. A nonconventional nuclear localization sequence (NLS) has been found for this protein which suggests a role in DNA replication via the protein serving as a nuclear transport protein for the second subunit of the Replication Factor C (RFC40). Several alternatively spliced transcript variants encoding two different isoforms have been observed. [provided by RefSeq, Jan 2013]

PRKAR1A Gene-Disease associations (from GenCC):

• Acrodysostosis 1 with or without hormone resistance

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• acrodysostosis with multiple hormone resistance

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Illumina, Orphanet
• Carney complex, type 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• pigmented nodular adrenocortical disease, primary, 1

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Genomics England PanelApp, Ambry Genetics
• acrodysostosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Carney complex

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• familial atrial myxoma

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• primary pigmented nodular adrenocortical disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.66).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002734.5. 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
	PRKAR1A	NM_002734.5	MANE Select	c.*1212T>C		3_prime_UTR	Exon 11 of 11	NP_002725.1
	PRKAR1A	NM_001276289.2		c.*1212T>C		3_prime_UTR	Exon 12 of 12	NP_001263218.1
	PRKAR1A	NM_001278433.2		c.*1212T>C		3_prime_UTR	Exon 11 of 11	NP_001265362.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKAR1A	ENST00000589228.6	TSL:1 MANE Select	c.*1212T>C		3_prime_UTR	Exon 11 of 11	ENSP00000464977.2
	PRKAR1A	ENST00000358598.6	TSL:1	c.*1212T>C		3_prime_UTR	Exon 11 of 11	ENSP00000351410.1
	PRKAR1A	ENST00000536854.6	TSL:1	c.*1212T>C		3_prime_UTR	Exon 12 of 12	ENSP00000445625.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000109 AC: 1 AN: 913916 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 421888

African (AFR) AF: 0.00 AC: 0 AN: 19664

American (AMR) AF: 0.00 AC: 0 AN: 3480

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 10244

East Asian (EAS) AF: 0.00 AC: 0 AN: 14984

South Asian (SAS) AF: 0.00 AC: 0 AN: 17148

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 760

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2110

European-Non Finnish (NFE) AF: 0.00000123 AC: 1 AN: 811482

Other (OTH) AF: 0.00 AC: 0 AN: 34044

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.66
CADD	Benign	13
DANN	Benign	0.86
PhyloP100		0.88
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs8905; hg19: chr17-66527802;