Presentation
The absence of renal stones and late presentation of cystinuria in Patient 2 also is perplexing. We would expect Patient 2 to present with urolithiasis and cystinuria earlier. [social.cn1699.cn]
They present with a phenotype intermediate between HCS and 2p21 deletion syndrome. BMJ Case Rep. 2009:0-0(2009) [PubMed] [Europe PMC] [uniprot.org]
They present with a phenotype intermediate between HCS and 2p21 deletion syndrome. These patients facilitate the elucidation of the contribution of each gene to the phenotype in the different 2p21 deletion syndromes. [jmg.bmj.com]
Growth impairment is still present but slowly improving. [frontiersin.org]
Singh, Angela Ho, Kristin Engelstad, Kayla Cornett, Jacqueline Montes, Darryl De Vivo Two siblings presented similarly with congenital hypotonia, lactic acidosis, and failure to thrive. [researcher-app.com]
Entire Body System
- Poor Feeding
Hypotonia-cystinuria syndrome (HCS, OMIM606407) is characterized by infantile hypotonia, poor feeding, and growth hormone deficiency. Affected individuals carry homozygous deletions including the cystinuria gene SLC3A1 and the adjacent PREPL gene. [zora.uzh.ch]
Hypotonia‐cystinuria syndrome (HCS, OMIM606407) is characterized by infantile hypotonia, poor feeding, and growth hormone deficiency. Affected individuals carry homozygous deletions including the cystinuria gene SLC3A1 and the adjacent PREPL gene. [semanticscholar.org]
In addition to cystinuria, people with this condition have low muscle tone (hypotonia) and poor feeding, which usually improves by early childhood. [medlineplus.gov]
- Feeding Difficulties
Case Report A 16-month-old male patient was admitted to our center with complaints of restlessness (sleep disturbance, crying episodes, feeding difficulty/reluctance), body laxity, and growth retardation. [karger.com]
Orphanet: 58 2p21 microdeletion syndrome without cystinuria is a rare partial autosomal monosomy characterized by weak fetal movements, severe infantile hypotonia and feeding difficulties that spontaneously improve with time, urogenital abnormalities [malacards.org]
Gastrointestinal
- Failure to Thrive
[…] to thrive growth hormone deficiency 606407 lactic acidemia respiratory chain complex IV deficiency hyperphagia minor facial dysmorphism severe somatic and developmental delay nephrolithiasis cystinuria neonatal seizures hypotonia [panelapp.genomicsengland.co.uk]
A rare, genetic disorder of amino acid absorption and transport, characterized by generalized hypotonia at birth, neonatal/infantile failure to thrive (followed by hyperphagia and rapid weight gain in late childhood), cystinuria type 1, nephrolithiasis [ebi.ac.uk]
Itis characterized_by neonatal and infantile hypotonia and failure to thrive, cystinuria type 1 and nephrolithiasis, growth retardation due to growth hormone deficiency, and minor facial dysmorphism. [informatics.jax.org]
Singh, Angela Ho, Kristin Engelstad, Kayla Cornett, Jacqueline Montes, Darryl De Vivo Two siblings presented similarly with congenital hypotonia, lactic acidosis, and failure to thrive. [researcher-app.com]
Failure to thrive usually persists for several years, followed by a period of hyperphagia and excessive weight gain. Growth retardation is usually observed, which responds well to growth hormone therapy. [eurekaselect.com]
Neurologic
- Forgetful
2012 14 2p21 Deletions in hypotonia-cystinuria syndrome. 61 Eggermann T...Ensenauer R 22766003 2012 15 Cystinuria: an inborn cause of urolithiasis. 61 Eggermann T...Zerres K 22480232 2012 16 Evaluation of the pediatric patient with hypotonia: don't forget [malacards.org]
Am J Hum Genet 78:38–51 Article PubMed CAS Google Scholar Jaeken J, Creemers J, Régal L (2012) Evaluation of the pediatric patient with hypotonia: don't forget the hypotonia-cystinuria syndrome! [link.springer.com]
Workup
The diagnostic workup in this patient illustrates the need for a careful clinical examination in context with powerful molecular genetic tools in patients with unusual phenotypes. [zora.uzh.ch]
X-Ray
- Nephrolithiasis
Nephrolithiasis occurs at variable ages. Synonyms: HCS [ebi.ac.uk]
[…] and sudden unexplained death in childhood review BIALLELIC, autosomal or pseudoautosomal Sources Expert Review Green Phenotypes hyperphagia lactic acidemia mild/moderate mental retardation Hypotonia-cystinuria syndrome (HCS) 606407 failure to thrive nephrolithiasis [panelapp.genomicsengland.co.uk]
Itis characterized_by neonatal and infantile hypotonia and failure to thrive, cystinuria type 1 and nephrolithiasis, growth retardation due to growth hormone deficiency, and minor facial dysmorphism. [informatics.jax.org]
Later in childhood, the brother developed cystinuria and nephrolithiasis whereas the older sister suffered from cystinuria and chronic neurobehavioral disturbances. [researcher-app.com]
Implication dans la Maladie: Hypotonia-cystinuria syndrome: Characterized generalized hypotonia at birth, nephrolithiasis, growth hormone deficiency, minor facial dysmorphism, failure to thrive, followed by hyperphagia and rapid weight gain in late childhood [antibodies.com]
Treatment
Early diagnosis is crucial because treatment with tiopronin can prevent stone formation and chronic kidney disease (3). [frontiersin.org]
The baby was kept under regular follow-up as there were no observable signs and symptoms for immediate treatment. [jisppd.com]
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]
Full text links Group 7SearchHeart failure treatmentPapersTopicsCollectionsEffects of Sodium-Glucose Cotransporter 2 Inhibitors for the Treatment of Patients With Heart Failure Importance: Only 1 class of glucose-lowering agents-sodium-glucose cotransporter [read.qxmd.com]
Patients respond well to growth hormone treatment. Electromyography and brain magnetic resonance imaging are normal, when performed. In addition, patients have classical cystinuria type I causing nephrolithiasis at variable ages. [nature.com]
Prognosis
PMID: 17579669 Prognosis Jaeken J, Martens K, Francois I, Eyskens F, Lecointre C, Derua R, Meulemans S, Slootstra JW, Waelkens E, de Zegher F, Creemers JW, Matthijs G Am J Hum Genet 2006 Jan;78(1):38-51. Epub 2005 Nov 23 doi: 10.1086/498852. [ncbi.nlm.nih.gov]
There is a poor prognosis for those with severe brain malformations, most often they die in the newborn. There is low recurrence risk rate to siblings for those cases that arise de novo. [jisppd.com]
In clinical practice, the molecular genetic testing results only scarcely influence the prognosis and therapy of cystinuria as causative therapies do currently not exist. [ojrd.biomedcentral.com]
Nucleophosmin gene mutations are predictors of favorable prognosis in acute myelogenous leukemia with a normal karyotype. Blood. 2005; 106:3733-9. [haematologica.org]
Etiology
Etiology The syndrome is caused by homozygous deletion of at least four contiguous genes on chromosome 2: SLC3A1, PREPL, PPM1B and C2orf34 (2p21). [orpha.net]
Significant contribution of genomic rearrangements in SLC3A1 and SLC7A9 to the etiology of cystinuria. Kidney Int. 2003 Nov;64(5):1564-72. doi: 10.1046/j.1523-1755.2003.00250.x. Citation on PubMed [medlineplus.gov]
Significant contribution of genomic rearrangements in SLC3A1 and SLC7A9 to the etiology of cystinuria. Kidney Int. 2003, 64: 1564-1572. 10.1046/j.1523-1755.2003.00250.x. [ojrd.biomedcentral.com]
Artículo en Chino | WPRIM | ID: wpr-921958 RESUMEN OBJECTIVE@#To identify the etiology of a patient with severe symptoms of DMD and to trace its pathogenic gene, so as to provide a basis for genetic counseling and clinical intervention. [search.bvsalud.org]
Epidemiology
Summary Epidemiology It has been described in seven patients from three families of a small Bedouin clan. [orpha.net]
Cancer epidemiology in the last century and the next decade. Nature2001;411(6835):390-5. http://doi.org/cxcvxb. [ Links ] 3. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, Parkin DM. GLOBOCAN 2008: Cancer incidence and mortality worldwide. [scielo.org.co]
Risk and epidemiological time trends of gastric cancer in Lynch syndrome carriers in the Netherlands. Gastroenterology 138, 487–492 (2010). Article Google Scholar Kempers, M. J. et al. [nature.com]
References Hesse A: Urinary calculi I: epidemiology, laboratory diagnosis, genetics and infections. Urol A. 2002, 41: 496-508. 10.1007/s00120-002-0235-x. [ojrd.biomedcentral.com]
Pathophysiology
It is likely that an effective treatment for Duchenne muscular dystrophy requires combinations of therapies that address both the primary defect and its secondary pathophysiological consequences. [search.bvsalud.org]
The detection rate for mutations in these genes is larger than 85%, but it is influenced by the ethnic origin of a patient and the pathophysiological significance of the mutations. [ojrd.biomedcentral.com]
Prevention
Conclusion: Physicians should consider contiguous gene deletion syndrome in Xp21 in the infants with myopathic compromise, increased levels of creatine phosphokinase and pseudohypertriglyceridaemia to be able to prevent and treat the metabolic complications [degruyter.com]
Early diagnosis is crucial because treatment with tiopronin can prevent stone formation and chronic kidney disease (3). [frontiersin.org]
If parents wish to have a child then in vitro fertilization can be advised with embryo biopsy and only healthy embryos are transferred to mother uterus to prevent transmission of 18p deletion. [8] Table 1: Clinical features observed in deletion of the [jisppd.com]
Evaluation of Genomic Applications in Practice and Prevention (EGAPP) Working Group. [scielo.org.co]
Current treatment of cystinolithiasis is currently focused on prevention of stone formation by reducing cystine excretion and concentration and by reducing cystine to the more soluble cysteine (for review: [4]). [ojrd.biomedcentral.com]