Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0025362 (mental retardation)
 15,878 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A child is described with a de novo direct duplication of the region 2q11 X 2 leads to 2q14 X 2. She probably represents the first reported case of proximal 2q duplication. The abnormalities included short stature, microcephaly, brachycephaly, depressed nasal bridge, prominent philtrum, congenital glaucoma, and mental retardation.
 ...
PMID:De novo direct tandem duplication of the proximal long arm of chromosome 2: 46,XX,dir dup(2)(q11 X 2q14 X 2). 669 86

A 3 1/2-year-old boy revealed moderate motor and mental retardation, normal growth, a congenital heart defect and multiple minor dysmorphic signs and anomalies including brachycephaly, orbital hypotelorism, upward slanting palpebral fissures, short and beaked nose, full cheeks, malformed auricles, hypoplastic external genitalia, rocker-bottom feet with prominent heels, and various minor radiologic anomalies of bones. An extra chromosome in his karyotype appeared to represent trisomy of the short arm of chromosome 20 due to a maternally inhherited balanced t(13;20)(p11;q11) translocation.
 ...
PMID:Trisomy 20pter = to q11 in a malformed boy from a t(13;20)(p11;q11) translocation-carrier mother. 735 83

A case of partial 3p trisomy is reported here. A review of published cases (8 males, 2 females, 7 families) shows a characteristic pattern of anomalies, constituting one more syndrome of multiple congenital anomaly and mental retardation (MCA/MR) characterized by microcephaly, brachycephaly, frontal bossing, temporal identation, square hypertelorism or telecanthus, epicanthus, short nose with a large tip, prominent cheeks, long and protruding philtrum, large and downturned mouth, protruding mid-upper lip, micro- or retrognathia, short neck, congenital heart defects, gastrointestinal malformation, penile hypoplasia, neuromotor or mental retardation, and predominance of whorls on digits. The proposita had a 46,XX,der(11),t(3;11)(p21;q25) karyotype. The mother was carrier of a de novo 3;11 balanced translocation. Chromosome mosaicism was detected in a female sibling of the proposita: 46% of her cells were 46,XX and 54% had 46,22,t(3;20(p21;13) karyotype - ie, a de novo 3;20 balanced translocation. We discuss the origin of this mosaicism and the possible meaning of the breaks involving the same region of chromosome 3 (region 3p 21) in the members of the proposita's family.
 ...
PMID:Partial 3p trisomy and different rearrangements involving chromosome 3 in the proposita's family. 739 98

We describe 47 patients with Angelman syndrome (AS) from Belgium and the Netherlands, including the anamnestic data, the clinical and the behavioral attributes at different ages. The clinical picture of AS is most distinct between the ages of 2-16 years. Most patients of this age group show at least 8 of the major characteristics (bursts of laughter, happy disposition, hyperactive behaviour, microcephaly, brachycephaly, macrostomia, tongue protrusion, mandibular prognathism, widely spaced teeth, stiff and puppetlike movements, typical stature, wide based gait) beside the mental retardation and (almost) absence of speech, which is a universal trait. The diagnosis in infants is based on only a limited number of clinical characteristics or on anamnestic data. However, if these occur in combination, they are indicative of AS. In older patients, the diagnosis may be hampered in part because of the changing behavioral characteristics and the decreasing frequency of fits. Other manifestations, such as scoliosis, may become more pronounced with age.
 ...
PMID:Clinical profile of Angelman syndrome at different ages. 762 42

We describe a proband and his mother who appear to have a new dominant syndrome of mental retardation: pterygium colli, unusual features, and digital anomalies. The craniofacial abnormalities include brachycephaly, epicanthus inversus, angulated eyebrows, upward slanting of the palpebral fissures, ptosis, hypertelorism, and prominent low set, posteriorly rotated ears. The digits are remarkable for proximally displaced small thumbs, widened interphalangeal joints, and broad terminal phalanges.
 ...
PMID:New dominant syndrome of pterygium colli, mental retardation, and digital anomalies. 797 63

Two unrelated Mexican girls, aged 14 months and 6 years respectively, with Kaufman oculocerebrofacial syndrome, are reported. Both showed psychomotor retardation, microcephaly, blepharophimosis and delayed growth as the main features; the infant also presented preauricular tags and large clitoris. Comparative analysis with previous cases reveals a heterogeneous syndrome in which the micro-brachycephaly, the mongoloid slanted eyes with different anomalies, the micrognathia and the neonatal respiratory distress are the most typical characteristics of this mental retardation syndrome.
 ...
PMID:Kaufman oculocerebrofacial syndrome: report of two new cases and further delineation. 827 67

We report on a German boy, born to nonconsanguineous parents, with an apparently new combination of multiple congenital anomalies including extraordinary hirsutism, marked brachycephaly, abnormal position of thumbs, pedes excavati with claw-toes, an abnormal face, and mental retardation. Additionally the boy manifests a disorder of uric acid metabolism. This sporadic case may represent a new syndrome due to a fresh autosomal or X-linked mutation, or chance-isolated case due to segregation of an autosomal recessive gene.
 ...
PMID:Hirsutism-skeletal dysplasia-mental retardation syndrome with abnormal face and a uric acid metabolism disorder. 809 96

Trisomy 1q is a rare condition frequently reported in association with other chromosomal abnormalities. An adult female patient had partial trisomy of the long arm of chromosome 1 (1q32.3-->qter) and partial monosomy of the short arm of chromosome 8 (8p23-->pter) of de novo origin. Clinical features in adulthood included mental retardation, short stature, long narrow face, brachycephaly, synophrys, small downward slanting palpebral fissures and long nose. Standard cytogenetic techniques in combination with fluorescence in situ hybridisation (FISH) studies were performed to determine the origin of the extra chromosomal material.
 ...
PMID:Partial trisomy 1q (1q32-->1qter) in adulthood: further delineation of the phenotype. 970 37

In three patients, two males aged four months and 39 years, and a female aged 19 years, trisomy 9p (the threefold presence of the short arm of chromosome 9) was diagnosed. The main symptoms are mental retardation, brachycephaly, hypertelorism with deep-set eyes, broad base of the nose, short philtrum, carp-shaped mouth, cup-shaped ears, short fingers and clinodactyly. Trisomy 9p is often caused by a balanced translocation in one of the parents. Therefore, cytogenetic studies of the parents and if appropriate other relatives are necessary. If one of the parents carries a translocation, the recurrence risk may vary from 2% to 15%. This depends on the length and origin of the chromosomal translocation segments. In case a translocation is found, genetic counselling of family members is warranted; it should include information concerning clinical symptoms, recurrence risks, prenatal diagnosis and other family planning alternatives.
 ...
PMID:[Trisomy 9p: a clinical picture and the importance of examining the family]. 1032 2

A child with monosomy for the distal part of the short arm of chromosome 3 (3p25-->pter) and trisomy for the terminal portion of the long arm of chromosome 17 (17q23-->qter) is presented. This unbalanced karyotype was derived from a balanced reciprocal 3p/17q translocation in the phenotypically normal mother. Main clinical features in the proband included growth and mental retardation, hypotonia, hirsutism, micro/brachycephaly, triangular face, synophris, broad and full nose, long philtrum, narrow upper lip, low set, posteriorly turned ears, anteriorly placed anus and congenital heart defect (Tetralogy of Fallot). Most of these clinical manifestations have been constantly reported in previous cases with terminal 3p deletion.
 ...
PMID:A 3p deletion syndrome in a child with both del(3)(p25-->pter) and dup(17)(q23-->qter). 1043 22


<< Previous 1 2 3 4 5 Next >>