Presentation
The relationship of some of the genes within the deleted region of 11q is considered in the context of the developmental anomalies presented in this patient. [karger.com]
ORPHA:96175 Synonym(s): RC11 Ring 11 Ring chromosome 11 r(11) syndrome Prevalence: Inheritance: - Age of onset: - ICD-10: Q93.2 OMIM: - UMLS: C0265444 MeSH: - GARD: 10846 MedDRA: - The documents contained in this web site are presented for information [orpha.net]
Minassian First published January 14, 2016, DOI: A previously healthy 16-year-old girl of Jamaican descent presented with a 1-year history of progressive daytime somnolence, sleep attacks (sudden irresistible episodes of sleep), and paroxysms of altered [ng.neurology.org]
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]
Eyes
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Miosis
الصفحة 358 - Ocular signs of cerebral involvement include the following: nystagmus, unilateral mydriasis, bilateral miosis with slow response to light, paralysis of accommodation, convergence, and 3rd, 4th, and 6th cranial nerve involvement. [books.google.com]
Face, Head & Neck
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Narrow Forehead
Table 1 List of clinical features observed in JBS present in the pro band Common dysmorphic features in JBS Proband Craniofacial High prominent forehead Facial asymmetry – Trigonocephaly Narrow forehead Flat occiput Ophthalmic Telecanthus Downslanting [ncbi.nlm.nih.gov]
Fig. 1 Clinical features of the patient. a Frontal view of the patient. b Facial features: high, prominent, narrow forehead; trigonocephaly; flat occiput; telecanthus; strabismus; palpebral ptosis; bushy double eyebrows; short nose; broad nasal bridge [karger.com]
Neurologic
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Cranial Nerve Involvement
الصفحة 358 - Ocular signs of cerebral involvement include the following: nystagmus, unilateral mydriasis, bilateral miosis with slow response to light, paralysis of accommodation, convergence, and 3rd, 4th, and 6th cranial nerve involvement. [books.google.com]
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Mydriasis
الصفحة 358 - Ocular signs of cerebral involvement include the following: nystagmus, unilateral mydriasis, bilateral miosis with slow response to light, paralysis of accommodation, convergence, and 3rd, 4th, and 6th cranial nerve involvement. [books.google.com]
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Sleep Attack
Minassian First published January 14, 2016, DOI: A previously healthy 16-year-old girl of Jamaican descent presented with a 1-year history of progressive daytime somnolence, sleep attacks (sudden irresistible episodes of sleep), and paroxysms of altered [ng.neurology.org]
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Focal Neurological Deficit
On examination, she was normocephalic and nondysmorphic and had no focal neurologic deficits. MRI brain was interpreted as within normal limits. [ng.neurology.org]
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Alteration of Consciousness
This pattern was associated with alteration of consciousness and drowsiness. (B) Karyotype demonstrating mosaicism of ring chromosome 20; some cells have the ring chromosome, whereas others have 2 normal chromosomes 20 (arrows). [ng.neurology.org]
Workup
Some of these manifestations involve craniofacial dysmorphology and require a functional workup for hearing, ophthalmic examinations, and long-term dental care. Keywords: Chromosome 11q13 Otodental syndrome Tooth abnormalities Hearing loss Coloboma [kjp.or.kr]
EEG
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Epileptiform Activity
Epileptiform activity may be activated in sleep. [ng.neurology.org]
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Focal Interictal Epileptiform Discharges
interictal epileptiform discharges, often in the frontal brain regions. [ng.neurology.org]
Treatment
The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment. [orpha.net]
This paper describes the presentation of r(20) syndrome in a young woman with moderate ID and treatment-resistant epilepsy, who experiences psychotic symptoms at times of improved seizure control. [emeraldinsight.com]
The role of other unconventional treatments of epilepsy is not established for the treatment of r(20) syndrome20 23, 24 ,25 The long term outcome of the syndrome is not known. [ring20researchsupport.co.uk]
Basically, treatment is dependent upon the specific symptoms seen in any given child. [chw.org]
In general, health problems that are present due to 22q11.2 deletion syndrome can be managed with treatment, especially if they are detected early. In the mid-1960s, an endocrinologist named Dr. [stanfordchildrens.org]
Prognosis
MLL) can occur in acute myeloid leukemia cases and are associated with a poor prognosis in all leukemias. [hoajonline.com]
Interestingly, leukemia with translocations involving MLL shows poor prognosis. [scielo.br]
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]
Genetic services offer families who have experienced a birth problem (including the 22q11.2 deletion) valuable information, including: Information about the problem's cause Your chances of having another child with the same problem Information about prognosis [chop.edu]
[…] 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]
Etiology
The etiology of epilepsy in r20 syndrome has not been elucidated. [ng.neurology.org]
In recognition of their unifying molecular etiology, the conditions previously known as velocardiofacial syndrome, DiGeorge syndrome, Shprintzen syndrome, and conotruncal anomaly face syndrome have been grouped into what is now termed the “22q11.2 deletion [pedsinreview.aappublications.org]
With more widespread cytogenetic chromosomal karyotyping in non-etiological cases of epilepsy, more cases of r(20) will undoubtedly be recognized. [content.iospress.com]
Failure of growth in weight, length, and head circumference starting at birth, suggesting an organic etiology that occurred in utero. [emedicine.medscape.com]
However, with more widespread cytogenetic chromosomal karyotyping in non-etiological cases of epilepsy, more cases of r(20) will undoubtedly be recognized.(1,2,3 ) Epilepsy Epilepsy is a constant feature of this syndrome and in many cases is intractable [ring20researchsupport.co.uk]
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]
Carbamazepine) 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. [2] Epidemiology [en.wikipedia.org]
Epidemiology Frequency International Estimates of incidence range from as high as 1 case in 3000 population to as low as 1 case in 100,000 population. [emedicine.medscape.com]
Epidemiology of adult acute myeloid leukemia: Impact of exposures on clinical phenotypes and outcomes after therapy. Cancer Epidemiol. 2015;39(6):1084-92. [ Links ] 36. Larsson SC, Wolk A. [scielo.br]
Pathophysiology
[…] hypomethylation in the chromosome 11p15 imprinting center 1 (IC1); some patients have maternal uniparental disomy of chromosome 7, with the possibility of imprinting (eg, inheriting two copies of maternal chromosome 7, with no paternal contribution). [3, 4, 5, 6] Pathophysiology [emedicine.medscape.com]
Chromosome 21 and Down syndrome: from genomics to pathophysiology. Nat Rev Genet 2004; 5 : 725–738. 12 Korenberg JR, Chen XN, Schipper R, Sun Z et al. Down syndrome phenotypes: the consequences of chromosomal imbalance. [nature.com]
Prevention
Hospital for Sick Children Health A-Z Search a complete list of child health articles expand_more View All Drug A-Z Search a list of articles about medications expand_more View All Learning Hubs Browse a complete list of content groups Healthy Living & Prevention [aboutkidshealth.ca]
Other treatments include: Making sure the person gets enough calories to prevent low blood sugar and promote growth Physical therapy to improve muscle tone Educational assistance to address learning disabilities and attention deficit problems the child [medlineplus.gov]
[…] 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]
Often, there's nothing you can do to prevent a miscarriage. [photoinfo.fr]
Left-sided obstructive lesions are defects that prevent the adequate blood flow from the heart. [rarediseases.org]