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BabyScreen+ newborn screening

Gene: DICER1

Green List (high evidence)

DICER1 (dicer 1, ribonuclease III)
EnsemblGeneIds (GRCh38): ENSG00000100697
EnsemblGeneIds (GRCh37): ENSG00000100697
OMIM: 606241, Gene2Phenotype
DICER1 is in 9 panels

1 review

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Green List (high evidence)

Rated as 'moderate actionability' in paediatric patients by ClinGen.

A multiple registry study examining neoplasm incidence in a cohort containing 102 non-probands with DICER1 pathogenic variants (3,344 person-years of observation in non-probands) found that by age 10 years, 5.3% (95% CI, 0.6% to 9.7%) of non-probands had developed a neoplasm (females, 4.0%; males, 6.6%). By age 50 years, 19.3% (95% CI, 8.4% to 29.0%) of non-probands had developed a neoplasm (females, 26.5%; males, 10.2%).

Most individuals with pathogenic variants in DICER1 are healthy or have only minor DICER1-associaited conditions. The most severe manifestations tend to present in early childhood with adulthood characterized by good health. The majority of tumors in individuals with DICER1 pathogenic variants occur in individuals younger than 40. Many of these tumors typically only occur in childhood, including: PPB (before age 7), CN (before age 4), CBME typically occurs in young children, pituitary blastoma (before age 2), and childhood pineoblastoma (only one has been reported associated with a DICER1 mutation).

Surveillance recommendations:
In order to detect pulmonary cysts or PPB (one of the most important causes of DICER1-associated morbidity and mortality), chest x-rays are recommended every 6 months from birth to through age 7 years and then annually from 8-12 years. A chest computed tomography (CT) (with efforts to minimize radiation) should be obtained by 9 months of age, preferably between 3 and 6 months of age and repeated at approximately 2.5 years of age.

Abdominal ultrasound is recommended for the detection in infancy or at the time of the first chest CT then every 6-12 months until at least 8 years of age. Annual ultrasound may be considered until 12 years of age.

Beginning at ages 8-10 females should receive pelvic ultrasound performed in conjunction with abdominal ultrasound (every 6-12 months) until at least age 40 or as needed for signs and symptoms.

Individuals should undergo thyroid ultrasound with assessment for regional adenopathy every 2 to 3 years starting at age 8 or as needed for signs and symptoms.

An annual routine dilated ophthalmologic exam with visual acuity screening is recommended from age 3 to at least age 10 for detection of CBME.
Sources: ClinGen
Created: 29 Dec 2022, 11:02 p.m.

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Phenotypes
DICER1 syndrome, MONDO:0017288

Details

Mode of Inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Sources
  • Expert Review Green
  • ClinGen
Phenotypes
  • DICER1 syndrome, MONDO:0017288
Tags
cancer treatable
OMIM
606241
Clinvar variants
Variants in DICER1
Penetrance
Incomplete
Panels with this gene

History Filter Activity

17 Jan 2023, Gel status: 3

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: dicer1 has been classified as Green List (High Evidence).

17 Jan 2023, Gel status: 2

Removed Tag

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Tag for review was removed from gene: DICER1.

29 Dec 2022, Gel status: 2

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: dicer1 has been classified as Amber List (Moderate Evidence).

29 Dec 2022, Gel status: 2

Entity classified by Genomics England curator

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Gene: dicer1 has been classified as Amber List (Moderate Evidence).

29 Dec 2022, Gel status: 1

Added Tag, Added Tag, Added Tag

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

Tag for review tag was added to gene: DICER1. Tag cancer tag was added to gene: DICER1. Tag treatable tag was added to gene: DICER1.

29 Dec 2022, Gel status: 1

Created, Added New Source, Set mode of inheritance, Set Phenotypes, Set penetrance

Zornitza Stark (Victorian Clinical Genetics Services; Australian Genomics)

gene: DICER1 was added gene: DICER1 was added to gNBS. Sources: ClinGen Mode of inheritance for gene: DICER1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Phenotypes for gene: DICER1 were set to DICER1 syndrome, MONDO:0017288 Penetrance for gene: DICER1 were set to Incomplete Review for gene: DICER1 was set to AMBER