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Ring Chromosome 19


Presentation

  • This study shows the feasibility of using CGH for the identification of supernumerary marker chromosomes, even in fewer than 50% of cells, where no clinical or cytogenetic clues are present.[ncbi.nlm.nih.gov]
  • The detail raw data are presented in [Table 1a] (presence: ; absence: -). Del(5q/20q), dir(9p/12p), -(18/19/Y), and, at least, one marker was consistently present in 88% of the cells evaluated.[cancerjournal.net]
  • Two important clinical characteristics which were commonly present in our case and other patients are developmental delay and microcephaly.[eymj.org]
  • Dyserythropoiesis was present, with megaloblastoid change and binuclear erythrocytes. Lymphoid aggregates and extrinsic cells were not present. Marrow fibrosis was not seen. Megakaryocytes were present, but reduced in number.[hoajonline.com]
Fishing
  • Targeted FISH using whole chromosome 19 library arm and site specific probes then confirmed the CGH results.[ncbi.nlm.nih.gov]
  • Karger AG, Basel References Crolla JA, Long F, Rivera H, Dennis NR: FISH and molecular study of autosomal supernumerary marker chromosomes excluding those derived from chromosomes 15 and 22: I. Results of 26 new cases.[karger.com]
  • The euchromatin DNA content of markers can be determined by aCGH only when copy number changes are localized to the marker by FISH. The identity of the centromere can be assigned only by FISH.[nature.com]
  • : breaks between 10.61-22.66 and 48.31-57.56 MB M-FISH; subcenM, PCL-FISH enhanced nuchal translucency, TOP {50} case 20 19-U- 11 female/ prenatal AF de novo 47,XY, mar[34%]/ 46,XY[66%] r(19)(::p11.1 q12::) M-FISH; subcenM; UPD-test advanced maternal[ssmc-tl.com]
Developmental Delay
  • Children with mild developmental delay without dysmorphic features do not often have identifiable underlying aetiological factors.[ncbi.nlm.nih.gov]
  • […] disorder cases: ring chromosome 19 and partial duplication 2q. ( 16179226 ) Hermsen M.A....Toral J.F. 2005 3 Malignant refractory epilepsy in identical twins mosaic for a supernumerary ring chromosome 19. ( 15270770 ) Shahwan A....King M.D. 2004 4 Mild developmental[malacards.org]
  • Vaz I, Larkins SA, Norman A, Green SH: Mild developmental delay due to ring chromosome 19 mosaicism. Dev Med Child Neurol 41:48–50 (1999). Article / Publication Details First-Page Preview[karger.com]
  • When we investigated diverse chromosome loci which are associated with the phenotype of developmental delay, deletion rather than duplication appeared to be predominantly related with the developmental delay, 16 , 17 thus leading to a possibility that[eymj.org]
  • Later in childhood, developmental delay, particularly of language skills.[ssmc-tl.com]
Epilepsy
  • We report identical twins with supernumerary ring chromosome 19 mosaicism, who had severe refractory epilepsy at an early age. The epilepsy was dominated largely by severe life-threatening tonic seizures.[ncbi.nlm.nih.gov]
  • 2 High resolution microarray CGH and MLPA analysis for improved genotype/phenotype evaluation of two childhood genetic disorder cases: ring chromosome 19 and partial duplication 2q. ( 16179226 ) Hermsen M.A....Toral J.F. 2005 3 Malignant refractory epilepsy[malacards.org]
  • Shahwan A, Green AJ, Carey A, Stallings RL, O’Flaherty OC, King MD: Malignant refractory epilepsy in identical twins mosaic for a supernumerary ring chromosome 19. Epilepsia 45:997–1000 (2004).[karger.com]
  • What is PCDH19 Epilepsy? PCDH19 Epilepsy is a rare epilepsy syndrome with early onset seizures, cognitive and sensory delays, and behavioral problems. It is caused by a change or mutation of the PCDH19 gene found on the X chromosome.[epilepsy.com]
  • [22] Ring chromosome 16 Mental retardation, microcephaly, growth delay, facial abnormalities [23] [24] Ring chromosome 17 [25] Ring chromosome 18 Mental retardation, growth delay, facial abnormalities [26] Ring chromosome 19 [27] Ring chromosome 20 Epilepsy[en.wikipedia.org]
Short Stature
  • We report on a patient with severe intellectual disability, microcephaly, short stature, and dysmorphic features who, based on standard karyotyping, has two cytogenetic abnormalities: an apparently balanced paracentric inversion of chromosome 7, inv(7[ncbi.nlm.nih.gov]
  • stature, low weightClinodactylyPMDD–46,XX,r(11)(p15q25); chromosome instability; and father with normal karyotypePatient 2: 33 years/F (mother of patients nos 1 and 3)– Cafe au lait spotMicrocephaly, short stature–Low IQ–46,XX,r(11)(p15q25); chromosome[edmcasereports.com]
  • stature, microcephaly, hyperactive, clinodactyly of V finger, normal mental/motor development, short attention span, hyperactive behaviour p22.3 q36.3 12431259 Edit 2 8922097_1 46, XY, r(7)(p22.3q36.3) [80%]/ 45, XY, -7 [20%] short stature, facial dysmorphism[chr7.org]
  • Typically the seizures are resistant to treatment with anti-epileptic drugs.Other symptoms may include: [1] [5] Microcephaly Lymphedema Facial abnormalities Immune deficiencies Abnormalities of retina Slow growth Short stature Cause The syndrome is caused[checkrare.com]
  • Patients with type 1 have generally a normal phenotype , with only occasional reports of short stature. The type 2 ring is associated with a wide variety of phenotypes, with varying severity.[omicsonline.org]
Congestive Heart Failure
  • Case presentation We report a case of a 78 year old female with a medical history of hypertension and congestive heart failure. She was status post pacemaker and defibrillator implantation from an unknown date.[hoajonline.com]
Pneumonia
  • […] normal karyotype (2) 2 months/FMild hirsutism, clitoromegaly Cafe au lait spotMicrocephaly, weight and height below 3rd percentileMany dysplastic features, FDPMDD, hypotonic, atrophy of the brain, seizuresCardiac malformation, pancytopenia, recurrent pneumonia[edmcasereports.com]
  • One week later, she suffered a small bowel obstruction, and her CT scan showed a possible aspiration pneumonia. Pseudomonas was identified as the cause. An additional chest x-ray was performed which showed worsening diffuse pneumonia bilaterally.[hoajonline.com]
Failure to Thrive
  • […] to thrive Highly arched palate Bilateral hydronephrosis Delayed gross motor skills Mechanisms of ring formation [ edit ] By two DNA breaks, one in each arm of the same chromosome, followed by fusion of the proximal broken ends.[en.wikibooks.org]
Low Set Ears
  • Symptoms - Chromosome 19 ring syndrome The list of signs and symptoms mentioned in various sources for Chromosome 19 ring syndrome includes the 20 symptoms listed below: * Small head * High forehead * Low set ears * Posteriorly rotated ears * Widely spaced[checkorphan.org]
  • . _2 46, XY, upd(7), r(7)(p11.2q21) pat Russell-Silver syndrome, intrauterine growth retardation, feeding difficulties, retarded bone age, growth retardation, motor development delay, low set ears/ear anomalies, muscular hypoplasia, triangular face, micrognathia[chr7.org]
  • Dysmorphism included high forehead with frontal bossing, voluminous ocular globes, hypertelorism, low-set ears with hypoplastic helix, wide, flat nasal bridge with bulging alae nasi, long and smooth philtrum, thin upper lip, and microretrognathia.[nature.com]
  • set ears, clinodactyly, seizures, epilepsy, no walking; 19-W- pter/ 1-2 male/ 12 year PBL de novo 47,XY, mar[75]/ 46,XY[25] mar(19)(pter q11:)* all centromeric probes; wcp 19, pcp 19p similar to case 19-W-pter/1-1 {29 - case 2} 19-W- p13.2/ 1-1 n male[ssmc-tl.com]
Normal Stature
  • Interestingly, apparently identical cytogenetic abnormalities were detected in the patient's mother, who presented with normal stature, few dysmorphic features, and normal cognition without microcephaly.[ncbi.nlm.nih.gov]
  • She had normal stature, head circumference, and deep tendon reflexes ( Figure 1 ). Hearing screen, electrocardiography, echocardiography, abdominal ultrasound and ophthalmologic examination were normal.[omicsonline.org]
Small Head
  • Symptoms - Chromosome 19 ring syndrome The list of signs and symptoms mentioned in various sources for Chromosome 19 ring syndrome includes the 20 symptoms listed below: * Small head * High forehead * Low set ears * Posteriorly rotated ears * Widely spaced[checkorphan.org]
Cutis Laxa
  • laxa * Pulmonic stenosis * Hypoplastic right ventricle * Coronary artery fistula * Growth retardation * Motor retardation * Mental retardation * Deafness * Autism Causes - Chromosome 19 ring syndrome * Clubfoot * Deafness * Growth retardation * High[checkorphan.org]
Suggestibility
  • Our findings strongly suggest that our patient's phenotype is largely attributable to partial 7pter trisomy and partial 7qter monosomy rather than mosaic supernumerary ring chromosome 19.[ncbi.nlm.nih.gov]
  • The finding suggests that TOMM40 affects memory — even when ApoE4 is not a factor.[keck.usc.edu]
  • Although these genes have been suggested to be associated with muscular dystrophy, hypercalcemia, and mental retardation, respectively, no such distinct phenotype was observed in our patient, possibly because it was duplication rather than deletion.[eymj.org]
  • Theodoropoulos DS, Cowan JM, Elias ER, Cole C (1995) Physical findings in 21q22 deletion suggest critical region for 21q- phenotype in q22. Am J Med Genet 59: 161-163.[omicsonline.org]
Psychomotor Retardation
  • Article / Publication Details First-Page Preview Abstract We report a 12-month-old infant evaluated for severe hypotonia, psychomotor retardation, and facial dysmorphisms, including round face, high prominent forehead, downward slanted palpebral fissures[karger.com]
  • Severe psychomotor retardation in a boy with a small supernumerary marker chromosome 19p. Cytogenet Genome Res 2008; 121 :298–301. 23.[nature.com]
  • Severe psychomotor retardation in a boy with a small supernumerary marker chromosome 19p. Cytogenet Genome Res. 2008;121(3-4):298-301. Stratton RF, DuPont BR, Olsen AS, Fertitta A, Hoyer M, Moore CM. Interstitial duplication 19p.[fish.uniklinikum-jena.de]
Hypertelorism
  • Article / Publication Details First-Page Preview Abstract We report a 12-month-old infant evaluated for severe hypotonia, psychomotor retardation, and facial dysmorphisms, including round face, high prominent forehead, downward slanted palpebral fissures, hypertelorism[karger.com]
  • Father''s phenotype was not unusual but the child was mentally retarded with generalized hypotonia, microcephaly, epicanthus, hypertelorism, cryptorchidism and obesity. Subject S.D. in this report. 46,XY,r(17).[ncbi.nlm.nih.gov]
  • 19 severe global DD; mild DYS inbcl. macrocornea and hypertelorism, dwarphism, musc. hypotonia {0} provided P.[ssmc-tl.com]
  • […] al. 1994) Criteria for diagnosis of CES include; Ocular coloboma of the iris and or retina Anal atresia (with or without fistula) Preauricular skin tags and pits Heart defects (especially total anomalous pulmonary venous return Dysmorphic features (hypertelorism[en.wikibooks.org]
  • He was born small for gestational age, and had some dysmorphic features (hypertelorism, anti-Mongolian slants, and minor nose and mouth malformations).[nature.com]
High Forehead
  • Symptoms - Chromosome 19 ring syndrome The list of signs and symptoms mentioned in various sources for Chromosome 19 ring syndrome includes the 20 symptoms listed below: * Small head * High forehead * Low set ears * Posteriorly rotated ears * Widely spaced[checkorphan.org]
  • On physical examination, craniofacial dysmorphic features such as broad nasal bridge, high forehead with posterior hairline, and upward directed corners of the eyes were noticed but the degree of dysmorphism was relatively mild.[eymj.org]
  • At 15y height 95th centile, high forehead, down-slanting palpebral fissures, wide diastema between upper incisors, high palate, short fraenulum of the upper lip, prominent lips and scoliosis, long and tapering fingers, fifth finger campodactyly, hallux[ssmc-tl.com]
  • Dysmorphism included high forehead with frontal bossing, voluminous ocular globes, hypertelorism, low-set ears with hypoplastic helix, wide, flat nasal bridge with bulging alae nasi, long and smooth philtrum, thin upper lip, and microretrognathia.[nature.com]
Round Face
  • Article / Publication Details First-Page Preview Abstract We report a 12-month-old infant evaluated for severe hypotonia, psychomotor retardation, and facial dysmorphisms, including round face, high prominent forehead, downward slanted palpebral fissures[karger.com]
  • Att 12 months, no head and trunk control, severely hypotonic, thin hair, high and prominent forehead, round face, sparse eyebrows, downward slanted palpebral fissures, hypertelorism, depressed mid face, low nasal bridge, short nose, anteverted nares,[ssmc-tl.com]
  • face, high prominent forehead, downward-slanted palpebral fissures, hypertelorism, short nose, chubby cheeks, long philtrum, anteverted lower lip, and low-set asymmetric and dysmorphic ears.[nature.com]
High and Prominent Forehead
  • Att 12 months, no head and trunk control, severely hypotonic, thin hair, high and prominent forehead, round face, sparse eyebrows, downward slanted palpebral fissures, hypertelorism, depressed mid face, low nasal bridge, short nose, anteverted nares,[ssmc-tl.com]
Frontal Bossing
  • Dysmorphism included high forehead with frontal bossing, voluminous ocular globes, hypertelorism, low-set ears with hypoplastic helix, wide, flat nasal bridge with bulging alae nasi, long and smooth philtrum, thin upper lip, and microretrognathia.[nature.com]
Seizure
  • The epilepsy was dominated largely by severe life-threatening tonic seizures. Both twins died, likely as a consequence of their severe epilepsy. They displayed no dysmorphic features.[ncbi.nlm.nih.gov]
  • Types of seizures seen may include: generalized tonic-clonic, tonic, clonic, complex partial, atypical absence, myoclonic, and atonic seizures. The first seizure commonly happens when the child may have a fever. Later seizures occur without fevers.[epilepsy.com]
  • It causes a number of serious health issues [1] [2] [3] There are other types of ring chromosomes, such as ring chromosome 13 . [4] Symptoms The most common symptoms are intellectual disability and recurrent seizures developing in infancy or early childhood[checkrare.com]
  • […] associated with fever; at 6m other similar seizures without feaver; at 22m she was found dead in her cot and was presumed to have had a prolonged seizure.[ssmc-tl.com]

Treatment

  • Treatment - Chromosome 19 ring syndrome Not supplied. Resources - Chromosome 19 ring syndrome Not supplied.[checkorphan.org]
  • The information is not intended to be a substitute for professional medical care, nor is it intended to be used as a basis for diagnosis or treatment.[socialstyrelsen.se]
  • Seizure medication is the first line of treatment to prevent seizures and stop seizure clusters. Some of the medicines used for this syndrome include: benzodiazepines, levetiracetam, valproate, phenytoin, phenobarbital, and lamotrigine.[epilepsy.com]
  • Typically the seizures are resistant to treatment with anti-epileptic drugs.Other symptoms may include: [1] [5] Microcephaly Lymphedema Facial abnormalities Immune deficiencies Abnormalities of retina Slow growth Short stature Cause The syndrome is caused[checkrare.com]
  • [Epub ahead of print] Simultaneous inhibition of IGF1R and EGFR enhances the efficacy of standard treatment for colorectal cancer by the impairment of DNA repair and the induction of cell death Oberthür R, Seemann H, Gehrig J, Rave-Fränk M, Bremmer F,[humangenetik-umg.de]

Prognosis

  • Prognosis - Chromosome 19 ring syndrome Not supplied. Treatment - Chromosome 19 ring syndrome Not supplied. Resources - Chromosome 19 ring syndrome Not supplied.[checkorphan.org]
  • MLL) can occur in acute myeloid leukemia cases and are associated with a poor prognosis in all leukemias.[hoajonline.com]
  • The present case with three times of IPSS-R complex aberrations is expected to exhibit very poor prognosis and faster transformation to AML.[cancerjournal.net]
  • […] are rare in occurrence supernumerary ring chromosomes often gradually disappear in vivo and only cells with normal karyotype are eventually observed (Michalski K et al. 1993 cited Hoo et al. 1980) not very many reports makes it difficult to predict prognosis[en.wikibooks.org]
  • Supernumerary marker 15 chromosomes: a clinical, molecular and FISH approach to diagnosis and prognosis. Hum Genet 1995; 95 :161–170. 7. Huang B, Crolla JA, Christian SL, et al.[nature.com]

Etiology

  • Expression analyses identify MLL as a prominent target of 11q23 amplification and support an etiologic role for MLL gain of function in myeloid malignancies. Blood. 2004; 103 :229-35. Article PubMed[hoajonline.com]

Epidemiology

  • Management In terms of the management of ring chromosome 14 syndrome, anticonvulsive medication for seizures, as well as, proper therapy to help prevent respiratory infections in the affected individual are management measures that can be taken. [7] Epidemiology[checkrare.com]
Sex distribution
Age distribution

Prevention

  • Chromosome 19 ring syndrome * Clubfoot * Deafness * Growth retardation * High forehead * High nasal bridge * Low set ears * Mental retardation * Motor retardation * Posteriorly rotated ears * Redundant neck skin * Small head * Syndactyly * Widely spaced eyes Prevention[checkorphan.org]
  • Is chronic lung disease in low birth weight infants preventable? A survey of eight centers. ‎ Página 84 - Tanner JM, Whitehouse RH, Marubini E, Resele LF. The adolescent growth spurt of boys and girls of the Harpenden growth study. ‎[books.google.es]
  • Seizure medication is the first line of treatment to prevent seizures and stop seizure clusters. Some of the medicines used for this syndrome include: benzodiazepines, levetiracetam, valproate, phenytoin, phenobarbital, and lamotrigine.[epilepsy.com]
  • […] karyotyping ; [8] while once born, one can do the following to ascertain a diagnosis of the condition: [7] MRI EEG Management In terms of the management of ring chromosome 14 syndrome, anticonvulsive medication for seizures, as well as, proper therapy to help prevent[checkrare.com]
  • To prevent bias in the study’s results, the researchers excluded participants who reported that they had received a likely diagnosis of dementia or a dementia-like condition, such as Alzheimer’s.[keck.usc.edu]

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