Trisomy 20p

Trisomy 20p is a chromosomal disorder resulting from duplication of all or part of the short arm of chromosome 20. It is mostly characterized by normal growth, mild to moderate intellectual disability, speech delay, poor coordination and evocative facial features.



Input patient's signs and symptoms


Narrow down the case reports



Total: 19 (papers)

  


(per page)
Matched Phenotype  Gene  Mutation  MeSH
Rank
(Similarity)
PMID
(PMCID)
11
(4.0%)
24311374
Combined immunodeficiency in a 3-year-old boy with 16p11.2 and 20p12.2-11.2 chromosomal duplications.
Batanian JR, Braddock SR, Christensen K, Knutsen AP.
Am J Med Genet A. 2014;164A(2):535-41.
Immunodeficiency
Adult Child, Preschool Chromosomal Duplication Chromosomes, Human, Pair 16 Chromosomes, Human, Pair 20 Facies Homo sapiens Male Severe Combined Immunodeficiency
11
(4.0%)
23612255
De novo trisomy 20p characterized by array comparative genomic hybridization: report of a novel case and review of the literature.
Bartolini L, Sartori S, Lenzini E, Rigon C, Cainelli E, Agrati C, Toldo I, Dona M, Trevisson E.
Gene. 2013;524(2):368-72.
Hyperactivity
Abnormal Karyotype Apgar Score Arachnoid Cysts Child, Preschool Chromosome Painting Chromosomes, Human, Pair 20 Chromosomes, Human, Pair 3 Homo sapiens Infant Male Phenotype Trisomy
11
(4.0%)
21948691
Maternally inherited partial monosomy 9p (pter → p24.1) and partial trisomy 20p (pter → p12.1) characterized by microarray comparative genomic hybridization.
Freitas EL, Gribble SM, Simioni M, Vieira TP, Silva-Grecco RL, Balarin MA, Prigmore E, Krepischi-Santos AC, Rosenberg C, Szuhai K, van Haeringen A, Carter NP, Gil-da-Silva-Lopes VL.
Am J Med Genet A. 2011;155A(11):2754-61.
Hypertelorism
AVP BMP2 DOCK8 DROSHA FOXD4 JAG1 MIS18BP1 MKKS PROKR2 RASSF2 RSPO4 VLDLR
Abnormal Karyotype Child, Preschool Chromosome Deletion Chromosome Mapping Chromosomes, Human, Pair 20 Chromosomes, Human, Pair 9 DNA Copy Number Variations Developmental Disabilities Fluorescent in Situ Hybridization Forkhead Transcription Factors Genome, Human Guanine Nucleotide Exchange Factors Homo sapiens Intellectual Disability Male Metaphase Physical Examination Trisomy
11
(4.0%)
16485319
Partial trisomy 20p resulting from recombination of a maternal pericentric inversion: case report of a prenatal diagnosis by chorionic villus sampling.
Molina-Gomes D, Nebout V, Daikha-Dahmane F, Vialard F, Ville Y, Selva J.
Prenat Diagn. 2006;26(3):239-41.
Increased nuchal translucency
Adult Chorionic Villi Sampling Chromosomes, Human, Pair 20 Females Fetal Diseases Homo sapiens Male Pregnancy Trisomy
11
(4.0%)
10398268
Trisomy 20p resulting from inverted duplication and neocentromere formation.
Voullaire L, Saffery R, Davies J, Earle E, Kalitsis P, Slater H, Irvine DV, Choo KH.
Am J Med Genet. 1999;85(4):403-8.
Chromosome breakage
CENPA CENPB CENPC CENPE CENPF INCENP
Centromere Child, Preschool Chromosomes, Human, Pair 20 Cytogenetics Females Fluorescent in Situ Hybridization Gene Duplication Homo sapiens Short Tandem Repeat Trisomy
11
(4.0%)
8418651
Duplication (20p) in association with thyroid carcinoma.
Clark P, Jones KL, Freidenberg GR.
Am J Med Genet. 1993;45(1):14-6.
Mutism
Adenocarcinoma Chromosome Aberrations Chromosomes, Human, Pair 12 Chromosomes, Human, Pair 20 Females Homo sapiens Intellectual Disability Multigene Family Thyroid Neoplasm
11
(4.0%)
6609676
"De Novo" trisomy 20p with macroorchidism in a prepuberal boy.
Balestrazzi P, Virdis R, Frassi C, Negri V, Rigoli E, Bernasconi S.
Ann Genet. 1984;27(1):58-9.
Macroorchidism
Child Chromosomes, Human, 19-20 Homo sapiens Intellectual Disability Male Testis Trisomy
11
(4.0%)
3981145
Trisomy 20p: case report and genetic review.
Lurie IW, Rumyantseva NV, Zaletajev DV, Gurevich DB, Korotkova IA.
J Genet Hum. 1985;33(1):67-75.
Psychomotor retardation
Chromosomes, Human, 13-15 Chromosomes, Human, 19-20 Females Homo sapiens Infant Trisomy
11
(4.0%)
2610493
Trisomy 20p from maternal translocation and anencephaly. Case report and genetic review.
Zumel RM, Darnaude MT, Delicado A, Diaz de Bustamante A, de Torres ML, Lopez Pajares I.
Ann Genet. 1989;32(4):247-9.
Anencephaly
Abortion, Habitual Anencephaly Chromosomes, Human, Pair 15 Chromosomes, Human, Pair 20 Females Homo sapiens Pregnancy Trisomy
        

Phenotype(s) retrieved from Orphanet

    Total: 71

HPO ID Term Frequency
HP:0000293 Full cheeks Very frequent (99-80%)
HP:0000311 Round face Very frequent (99-80%)
HP:0000411 Protruding ear Very frequent (99-80%)
HP:0000470 Short neck Very frequent (99-80%)
HP:0000574 Thick eyebrow Very frequent (99-80%)
HP:0001252 Muscular hypotonia Very frequent (99-80%)
HP:0001288 Gait disturbance Very frequent (99-80%)
HP:0001999 Abnormal facial shape Very frequent (99-80%)
HP:0002167 Neurological speech impairment Very frequent (99-80%)
HP:0002271 obsolete Autonomic dysregulation Very frequent (99-80%)
HP:0002311 Incoordination Very frequent (99-80%)
HP:0002553 Highly arched eyebrow Very frequent (99-80%)
HP:0002916 Abnormality of chromosome segregation Very frequent (99-80%)
HP:0003312 Abnormal form of the vertebral bodies Very frequent (99-80%)
HP:0005692 Joint hyperflexibility Very frequent (99-80%)
HP:0100543 Cognitive impairment Very frequent (99-80%)
HP:0100790 Hernia Very frequent (99-80%)
HP:0000023 Inguinal hernia Frequent (79-30%)
HP:0000164 Abnormality of the dentition Frequent (79-30%)
HP:0000174 Abnormal palate morphology Frequent (79-30%)
HP:0000248 Brachycephaly Frequent (79-30%)
HP:0000286 Epicanthus Frequent (79-30%)
HP:0000294 Low anterior hairline Frequent (79-30%)
HP:0000316 Hypertelorism Frequent (79-30%)
HP:0000347 Micrognathia Frequent (79-30%)
HP:0000368 Low-set, posteriorly rotated ears Frequent (79-30%)
HP:0000400 Macrotia Frequent (79-30%)
HP:0000463 Anteverted nares Frequent (79-30%)
HP:0000486 Strabismus Frequent (79-30%)
HP:0000582 Upslanted palpebral fissure Frequent (79-30%)
HP:0001156 Brachydactyly Frequent (79-30%)
HP:0001357 Plagiocephaly Frequent (79-30%)
HP:0001537 Umbilical hernia Frequent (79-30%)
HP:0001760 Abnormality of the foot Frequent (79-30%)
HP:0001883 Talipes Frequent (79-30%)
HP:0002162 Low posterior hairline Frequent (79-30%)
HP:0002208 Coarse hair Frequent (79-30%)
HP:0002414 Spina bifida Frequent (79-30%)
HP:0003196 Short nose Frequent (79-30%)
HP:0003272 Abnormality of the hip bone Frequent (79-30%)
HP:0006101 Finger syndactyly Frequent (79-30%)
HP:0100874 Thick hair Frequent (79-30%)
HP:0000028 Cryptorchidism Occasional (29-5%)
HP:0000047 Hypospadias Occasional (29-5%)
HP:0000053 Macroorchidism Occasional (29-5%)
HP:0000069 Abnormality of the ureter Occasional (29-5%)
HP:0000077 Abnormality of the kidney Occasional (29-5%)
HP:0000126 Hydronephrosis Occasional (29-5%)
HP:0000232 Everted lower lip vermilion Occasional (29-5%)
HP:0000233 Thin vermilion border Occasional (29-5%)
HP:0000268 Dolichocephaly Occasional (29-5%)
HP:0000319 Smooth philtrum Occasional (29-5%)
HP:0000322 Short philtrum Occasional (29-5%)
HP:0000494 Downslanted palpebral fissures Occasional (29-5%)
HP:0000581 Blepharophimosis Occasional (29-5%)
HP:0000691 Microdontia Occasional (29-5%)
HP:0000926 Platyspondyly Occasional (29-5%)
HP:0001177 Preaxial hand polydactyly Occasional (29-5%)
HP:0002007 Frontal bossing Occasional (29-5%)
HP:0002564 obsolete Malformation of the heart and great vessels Occasional (29-5%)
HP:0002650 Scoliosis Occasional (29-5%)
HP:0002714 Downturned corners of mouth Occasional (29-5%)
HP:0002808 Kyphosis Occasional (29-5%)
HP:0003422 Vertebral segmentation defect Occasional (29-5%)
HP:0004349 Reduced bone mineral density Occasional (29-5%)
HP:0004397 Ectopic anus Occasional (29-5%)
HP:0005562 Multiple renal cysts Occasional (29-5%)
HP:0006610 Wide intermamillary distance Occasional (29-5%)
HP:0009738 Abnormality of the antihelix Occasional (29-5%)
HP:0100490 Camptodactyly of finger Occasional (29-5%)
HP:0100542 Abnormal localization of kidney Occasional (29-5%)


Phenotype(s) retrieved from case reports

    Total: 6

HPO ID Term # of case reports
HP:0000053 Macroorchidism 1
HP:0000347 Micrognathia 1
HP:0000938 Osteopenia 1
HP:0001629 Ventricular septal defect 1
HP:0002119 Ventriculomegaly 1
HP:0002323 Anencephaly 1


Causative gene(s) retrieved from Orphanet

    Total: 0

Gene Symbol Gene Name Entrez Gene ID