HAND1 p.Arg177Arg

Variant names:

• chr5-154477477-T-T
• NM_004821.3:c.

Your query was ambiguous. Multiple possible variants found:

• chr5-154477478--
• chr5-154477478-C-A
• chr5-154477478-C-G
• chr5-154477478-C-T
• chr5-154477480-G-T
• chr5-154477478-CCG-TCT

Variant summary

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

The NM_004821.3(HAND1):​c. variant causes a exon region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: HAND1 NM_004821.3 exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.17
• Publications: 0 publications found

Genes affected

HAND1 (HGNC:4807): (heart and neural crest derivatives expressed 1) The protein encoded by this gene belongs to the basic helix-loop-helix family of transcription factors. This gene product is one of two closely related family members, the HAND proteins, which are asymmetrically expressed in the developing ventricular chambers and play an essential role in cardiac morphogenesis. Working in a complementary fashion, they function in the formation of the right ventricle and aortic arch arteries, implicating them as mediators of congenital heart disease. In addition, it has been suggested that this transcription factor may be required for early trophoblast differentiation. [provided by RefSeq, Jul 2008]

HAND1 Gene-Disease associations (from GenCC):

• congenital heart disease

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen

ENSG00000306071 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004821.3. 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
	HAND1	NM_004821.3	MANE Select	c.		exon_region	Exon 1 of 2	NP_004812.1	O96004

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HAND1	ENST00000231121.3	TSL:1 MANE Select	c.		exon_region	Exon 1 of 2	ENSP00000231121.2	O96004
	HAND1	ENST00000878293.1		c.		exon_region	Exon 1 of 2	ENSP00000548352.1
	ENSG00000306071	ENST00000815094.1		n.		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		1.2

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr5-153857037;