Trisomy 12p

A partial autosomal trisomy characterized by developmental delay and intellectual disability, generalized hypotonia, postnatal growth retardation, variable brain and heart anomalies and dysmorphic features, including frontal bossing, round face, full cheeks, low-set ears, broad nasal bridge, short nose with anteverted nares, long philtrum, thin upper lip vermilion, and everted, thick lower lip. Unspecific associated congenital anomalies have also been reported.



Input patient's signs and symptoms


Narrow down the case reports



Total: 30 (papers)

  


(per page)
Matched Phenotype  Gene  Mutation  MeSH
Rank
(Similarity)
PMID
(PMCID)
1
(70.8%)
17163546
Subtelomeric analysis detects a familial 10p;12p rearrangement in two relatives with a distinct syndrome.
Battaglia A, Novelli A, Ceccarini C, Bernardini L, Carey JC.
Am J Med Genet A. 2007;143A(2):184-8.
Epicanthus Short philtrum Micrognathia
Adult Child, Preschool Chromosome Aberrations Chromosomes, Human, Pair 10 Chromosomes, Human, Pair 12 Craniofacial Abnormalities Females Foot Homo sapiens Intellectual Disability Monosomy Syndrome Trisomy
2
(58.7%)
148983
Trisomy 12p syndrome. Evaluation of a family with a t(12;21) (p12.1;p11) translocation with unbalanced offspring.
Hansteen IL, Schirmer L, Hestetun S.
Clin Genet. 1978;13(4):339-49.
Broad face Short sternum Genu valgum
NBL1
Child Chromosomes, Human, 21-22 and Y Chromosomes, Human, 6-12 and X Dermatoglyphics Down Syndrome Females Growth Disorders Homo sapiens Infant Intellectual Disability Male Syndrome Trisomy
3
(50.0%)
8723117
Clinical and molecular cytogenetic observations in three cases of "trisomy 12p syndrome".
Rauch A, Trautmann U, Pfeiffer RA.
Am J Med Genet. 1996;63(1):243-9.
Macrocephaly High forehead Polydactyly
Child, Preschool Chromosomes, Human, Pair 12 Cosmids Females Fluorescent in Situ Hybridization Homo sapiens Infant, Newborn Intellectual Disability Lymphocyte Male Syndrome Trisomy
4
(40.2%)
16652358
Intrachromosomal triplication 12p11.22-p12.3 and gonadal mosaicism of partial tetrasomy 12p.
Eckel H, Wimmer R, Volleth M, Jakubiczka S, Muschke P, Wieacker P.
Am J Med Genet A. 2006;140(11):1219-22.
Macrocephaly Short nose
Chromosome Aberrations Chromosome Banding Chromosomes, Human, Pair 12 Craniofacial Abnormalities Females Fluorescent in Situ Hybridization Homo sapiens Intellectual Disability Male Mosaicism
5
(40.1%)
22959136
A new partial trisomy 12p with artery catheter vagus, congenital cataracts, external auditory canal, and no turbinate.
Liu YH, Xie RG, Zhang XY, Wei SD, He Y, Xu WF, Lin YY, Xiong F.
Gene. 2012;509(1):164-7.
Open mouth Short neck
POLE4 TMED2
Adult Aorta Cataract Chromosomes, Human, Pair 12 Chromosomes, Human, Pair 6 Females Homo sapiens Male Membrane Glycoproteins Membrane Transport Proteins Pregnancy Trisomy Turbinates
5
(40.1%)
9249870
Prenatal diagnosis of partial trisomy 12 and partial trisomy 21 due to a 3:1 segregation of maternal reciprocal translocation t(12;21) (p13.3;q21).
Chen CP, Lin CC, Chuang CY, Lee CC, Chen WL, Jan SW, Lin SP.
Prenat Diagn. 1997;17(7):675-80.
Open mouth Short neck
Adult Chromosomes, Human, Pair 12 Down Syndrome Females Homo sapiens Phenotype Pregnancy Trisomy
7
(39.8%)
422196
Trisomy 12p syndrome: de novo occurrence of mosaic trisomy 12p in a mentally retarded boy.
Kondo I, Hamaguchi H, Haneda T.
Hum Genet. 1979;46(2):135-40.
Epicanthus Generalized hypotonia
Chromosome Banding Chromosomes, Human, 6-12 and X Congenital Foot Deformity Face Homo sapiens Infant Intellectual Disability Male Mosaicism Syndrome Trisomy
8
(26.3%)
24503147
Report on 3 patients with 12p duplication including GRIN2B.
Poirsier C, Landais E, Bednarek N, Nobecourt JM, Khoury M, Schmidt P, Morville P, Gruson N, Clomes S, Michel N, Riot A, Manjeongean C, Gaillard D, Doco-Fenzy M.
Eur J Med Genet. 2014;57(5):185-94.
High forehead
GRIN2B
Adult Chromosomes, Human, Pair 12 Females Homo sapiens Male N-Methyl-D-Aspartate Receptors Trisomy
8
(26.3%)
858622
Partial trisomy 12p due to t(12;21)pat translocation.
Biederman B, Bowen P, Robertson C, Schiff D.
Hum Genet. 1977;36(1):35-41.
Ptosis Prominent forehead
Chromosome Aberrations Chromosomes, Human, 21-22 and Y Chromosomes, Human, 6-12 and X Females Homo sapiens Infant Infant, Newborn Phenotype Trisomy
8
(26.3%)
624544
Double translocation t(7;12),t(2;6) heterozygosity in one family. A contribution to the trisomy 12p syndrome.
Bijlsma JB, de France HF, Bleeker-Wagemakers LM, Dijkstra PF.
Hum Genet. 1978;40(2):135-47.
Short nose
Chromosomes, Human, 1-3 Chromosomes, Human, 6-12 and X Heterozygote Homo sapiens Intellectual Disability Male Trisomy
        

Phenotype(s) retrieved from Orphanet

    Total: 31

HPO ID Term Frequency
HP:0000232 Everted lower lip vermilion Very frequent (99-80%)
HP:0000262 Turricephaly Very frequent (99-80%)
HP:0000272 Malar flattening Very frequent (99-80%)
HP:0000286 Epicanthus Very frequent (99-80%)
HP:0000293 Full cheeks Very frequent (99-80%)
HP:0000316 Hypertelorism Very frequent (99-80%)
HP:0000347 Micrognathia Very frequent (99-80%)
HP:0000431 Wide nasal bridge Very frequent (99-80%)
HP:0000470 Short neck Very frequent (99-80%)
HP:0000474 Thickened nuchal skin fold Very frequent (99-80%)
HP:0000574 Thick eyebrow Very frequent (99-80%)
HP:0001176 Large hands Very frequent (99-80%)
HP:0001249 Intellectual disability Very frequent (99-80%)
HP:0001263 Global developmental delay Very frequent (99-80%)
HP:0002714 Downturned corners of mouth Very frequent (99-80%)
HP:0002916 Abnormality of chromosome segregation Very frequent (99-80%)
HP:0003196 Short nose Very frequent (99-80%)
HP:0004209 Clinodactyly of the 5th finger Very frequent (99-80%)
HP:0009738 Abnormality of the antihelix Very frequent (99-80%)
HP:0012368 Flat face Very frequent (99-80%)
HP:0000369 Low-set ears Frequent (79-30%)
HP:0000520 Proptosis Frequent (79-30%)
HP:0002564 obsolete Malformation of the heart and great vessels Frequent (79-30%)
HP:0002750 Delayed skeletal maturation Frequent (79-30%)
HP:0004322 Short stature Frequent (79-30%)
HP:0000079 Abnormality of the urinary system Occasional (29-5%)
HP:0000175 Cleft palate Occasional (29-5%)
HP:0002023 Anal atresia Occasional (29-5%)
HP:0002558 Supernumerary nipple Occasional (29-5%)
HP:0008053 Aplasia/Hypoplasia of the iris Occasional (29-5%)
HP:0008056 Aplasia/Hypoplasia affecting the eye Occasional (29-5%)


Phenotype(s) retrieved from case reports

    Total: 21

HPO ID Term # of case reports
HP:0003196 Short nose 5
HP:0000256 Macrocephaly 2
HP:0000348 High forehead 2
HP:0000470 Short neck 2
HP:0001290 Generalized hypotonia 2
HP:0012368 Flat face 2
HP:0000283 Broad face 1
HP:0000395 Prominent antihelix 1
HP:0000518 Cataract 1
HP:0000879 Short sternum 1
HP:0001252 Muscular hypotonia 1
HP:0001263 Global developmental delay 1
HP:0001763 Pes planus 1
HP:0002023 Anal atresia 1
HP:0002857 Genu valgum 1
HP:0008070 Sparse hair 1
HP:0010442 Polydactyly 1
HP:0011150 Myoclonic absence 1
HP:0011220 Prominent forehead 1
HP:0025356 Psychomotor retardation 1
HP:0031110 Twin-to-twin transfusion 1


Causative gene(s) retrieved from Orphanet

    Total: 0

Gene Symbol Gene Name Entrez Gene ID