Presentation
Ring chromosome 7 presenting with intrauterine growth restriction and multiple anomalies. [researchoutput.ncku.edu.tw]
An 8-year-old child with a ring chromosome 7 is presented, the first female and the fourth such individual to be described. [ncbi.nlm.nih.gov]
Entire Body System
- Multiple Congenital Anomalies
[…] associated with ring chromosome 7. ( 1746606 ) Biesecker L.G....Glover T.W. 1991 27 Ring chromosome 7 in a man with multiple congenital anomalies and mental retardation. ( 2395166 ) 1990 28 Ring chromosome 7: report of the fifth case. ( 2189730 ) Caramia [malacards.org]
Multiple congenital anomalies associated with a partially ring-shaped chromosome probably derived from chromosome No. 18 in man. Nature, 202 : 829, Jacobsen, P. ( 1966 ). [cambridge.org]
Mosaic r(13) resulting in large deletion of chromosome 13q in a newborn female with multiple congenital anomalies. American Journal of Medical Genetics, 111, 61–67. MacDermot, K. D., Jack, E., Cooke, A., Turleau, C., Lindenbaum, R. [slideshare.net]
Taiwan J Obstet Gynecol 51: 71-76. van der Veken LT, Dieleman MM, Douben H, van de Brug JC, van de Graaf R, et al. (2010) Low grade mosaic for a complex supernumerary ring chromosome 18 in an adult patient with multiple congenital anomalies. [omicsonline.org]
- Vietnamese
The Vietnamese mother was 23 at delivery, and the Taiwanese father was in his 40 s. [molecularcytogenetics.biomedcentral.com]
- Refractory Anemia
The patient was diagnosed as MDS-refractory anemia excess blast type 2 (RAEB-2) (IPSS): 3, high risk). Acute myeloid leukemia (AML) induction type- chemotherapy was initiated. [eastjmed.org]
Respiratoric
- Respiratory Distress
distress * Small penis * Growth retardation * Mental retardation * Feeding difficulty * Failure to thrive Causes - Chromosome 7 ring syndrome Not supplied. [checkorphan.org]
Methods Patient and Clinical examination A female child with microcephaly (Figure 1 A and 1B, pictures taken at one year and 10 months of age) and respiratory distress was referred to the genetic counselling at the department of Pediatrics at Tzu Chi [molecularcytogenetics.biomedcentral.com]
distress syndrome ADULT syndrome Aicardi syndrome Aicardi-Goutieres syndrome + Akaba Hayasaka Syndrome Akesson Syndrome akinetic mutism Aksu von Stockhausen Syndrome Al Awadi Syndrome Al Gazali Aziz Salem Syndrome Al Gazali Hirschsprung Syndrome Al Gazali [rgd.mcw.edu]
Gastrointestinal
- Failure to Thrive
[…] to thrive Causes - Chromosome 7 ring syndrome Not supplied. [checkorphan.org]
[…] growth failure is more common among patients with large ring chromosomes, than among those with small ones (Kosztolanyi 1987). [en.wikibooks.org]
They showed a phenotype consistent with the “ring syndrome” with failure to thrive, minor dysmporphic features and no major anomalies. [tp.amegroups.com]
Liver, Gall & Pancreas
- Hepatosplenomegaly
A 62-year-old female patient presented with thrombocytopenia, isolated hepatosplenomegaly, and extremely high levels of LDH. [ncbi.nlm.nih.gov]
Ears
- Normal Hearing
Abdominal ultrasonography, heart beat, and biochem- ical investigations of blood and urine were normal. Genital examination and menstrual history were also normal. Hearing and eyesight were normal. [slideshare.net]
Musculoskeletal
- Long Hands
The main clinical features were delayed psychomotor development, congenital heart defect, facial dysmorphisms, and long hands, fingers, feet and toes. [ncbi.nlm.nih.gov]
At the age of 12 days was noted thin long hands and fingers, thin long feet and toes, broad nasal bridge, epicanthal folds, telecanthus, retrognathia, high arched palate, and dysplastic ears with prominent helix were present. [ssmc-tl.com]
Skin
- Skin Lesion
This association is possibly not fortuitous, particularly since most ring chromosome 7 patients reported to date have pigmented skin lesions. [ncbi.nlm.nih.gov]
However, patients with partial trisomy have speech difficulty as a distinguishing feature, while patients with partial monosomy have skin lesions as a cardinal feature. [ingentaconnect.com]
- Skin Edema
Ultrasound evaluation revealed a single anterior ventricle, fused thalami, an increased nuchal translucency measuring 2.9 mm, a flattened profile with an absent nasal bone, and skin edema of the thorax and abdomen (Figure 1). [cyberleninka.org]
Breast
- Widely Spaced Nipples
Clinical examination revealed a dysmorphic face, upward slanting palpebral fissures, broad nose, narrow nares, large lips, short neck, widely spaced nipples, puffy hands and feet, and dark pigmented naevi over the abdomen, thorax and thigh (see Figures [slideshare.net]
Neurologic
- Quadriplegia
Deep plantar creases * Café au lait spots * Pigmented nevi * Nevus flammeus * Fusion of cerebral hemispheres * Agenesis of olfactory bulb * Teterotopic Purkinje cells in cerebellar white matter * Brain atrophy * Brain hypomyelination * Convulsions * Quadriplegia [checkorphan.org]
- Waddling Gait
Arslan M, Yis U, Vurucu S, Tunca Y, Unay B, et al. (2012) Ring chromosome 21 in the differential diagnosis of waddling gait. Brain Dev 34: 792-795. [omicsonline.org]
Workup
When fetuses present with severe IUGR, oligohydramnios and multicystic kidney, chromosomal aberrations should be kept in mind, and perinatal cytogenetic workup is warranted. [researchoutput.ncku.edu.tw]
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]
Antenatal diagnosis and treatment of fetal goitrous hypothyroidism: case report and review of the literature. Ultrasound Obstet Gynecol 1995; 6:368-71 9. Hadi HA, Strickland RT. [books.google.de]
Treatment - Chromosome 7 ring syndrome Not supplied. Resources - Chromosome 7 ring syndrome Chromosome 7 ring syndrome is listed as a \"rare disease\" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). [checkorphan.org]
Anti-epileptic drugs are the mainstay and first line of treatment; however no one drug or treatment has been shown to be better than others. Patients are frequently exposed to multiple anti-epileptic drugs. [epilepsy.com]
Showing 1-10 of 111 references Ringchromosom Nr. 18 und fehlendes IgA bei einem 6 j ~ hrigen M ~ dchen ( 46, XX, 18 r ) Une nouvelle observation de chromosome 18 en anneau Banding pattern with Giemsa staining after treatment with trypsin [semanticscholar.org]
Prognosis
Objective: Ring chromosome 7 is a very rare chromosomal anomaly that may have a grave prognosis. Nevertheless, the clinical features associated with ring chromosome 7 are highly variable. [researchoutput.ncku.edu.tw]
Prognosis - Chromosome 7 ring syndrome Not supplied. Treatment - Chromosome 7 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]
Interestingly, leukemia with translocations involving MLL shows poor prognosis. [scielo.br]
[…] 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
HPE is a phenotypically variable disorder with heterogeneous etiology including both genetic and environmental causes. [cyberleninka.org]
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]
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(1):229-35. [ Links ] 23. Sárová I, Brezinová J, Zemanová Z, et al. [scielo.br]
Epidemiology
In accordance with its purpose as a scientific research platform, the GAZEL cohort is permanently open to epidemiologic research teams. [re3data.org]
Shiota, "Holoprosencephaly in human embryos: epidemiologic studies of 150 cases," Teratology, vol. 16, no. 3, pp. 261-272,1977. [6] J. R. Sawyer, J. L. Lukacs, S. J. [cyberleninka.org]
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]
Prevention
Prevention - Chromosome 7 ring syndrome Not supplied. Diagnosis - Chromosome 7 ring syndrome signs and symptoms of Chromosome 7 ring syndrome may vary on an individual basis for each patient. [checkorphan.org]
Before starting the treatment, we perform some necessary tests that will help us uncover what prevents you from conceiving a baby. Each couple is different and therefore needs a consultation with a professional. Many thanks to you! [int.pronatal.cz]
Tags: Feature 05 March 2019 DNA cable tie vital role in cancer prevention A cable tie-style ring of proteins that hold our chromosomes together as they replicate play a vital role in stopping DNA damage leading to cancer. Tags: Feature [ukri.org]
For affected infants with craniosynostosis, depending on the number and type of cranial suture(s) involved and other factors, early surgery may be advised to help prevent abnormal shaping of the head, increase skull capacity, and/or prevent possible neurologic [rarediseases.org]
Out of 123 genes that were found to be recurrently amplified and overexpressed, at least 25 have been reported to positively regulate proliferation, promote cell growth and/or prevent apoptosis. [academic.oup.com]