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2.1
1q41-q42 Microdeletion Syndrome
Holoprosencephaly

Presentation

Stereotyped behaviors are also present and these are similar to Rett syndrome or Angelman syndrome. [scielo.br]

The deletion of these genes explains the phenotypic presentation. [karger.com]

The documents contained in this web site are presented for information purposes only. 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]

Furthermore, prognosis and life expectancy varies with each individual, based on both how mildly or severely affected the individual is, and which signs and symptoms are present. [rareguru.com]

At present, she can neither verbalize a complete sentence nor pronounce words clearly. [frontiersin.org]

Entire Body System

  • Short Stature

    Other features may include hypotonia; short stature; seizures; heart defects; structural brain anomalies (most commonly underdevelopment of the corpus callosum); genitourinary abnormalities; cleft palate; microcephaly; vision problems; hearing loss; and [rarediseases.org]

    Patients have mainly short stature due to haploinsufficiency of the IGF1R gene. 15q26.1 Deletion. Intractable epilepsy, ID and short stature. Chromosome 16 16p11.2 Deletion/Duplication. [scielo.br]

    Summary The 1q43q44 and 1q44 microdeletion syndromes have shown to be a somewhat recognizable phenotype with various degrees of developmental delay, short stature, characteristic facial features, microcephaly, and various midline defects, of which abnormalities [bredagenetics.com]

  • Poor Feeding

    There have been variable features described in the literature, and individuals have ranged from being mildly to severely affected.[2906][2907] Features may include poor feeding in infancy; developmental delay including delayed or absent speech; and moderate [rarediseases.org]

    Features may include poor feeding in infancy; developmental delay including delayed or absent speech; and moderate to severe intellectual disability. [rarediseases.info.nih.gov]

  • Nail Abnormality

    Preauricular skin tag Small nail Abnormality of the musculoskeletal system Congenital diaphragmatic hernia Dolichocephaly Frontal bossing Microcephaly Pectus excavatum Scoliosis Trigonocephaly Vertebral segmentation defect Abnormality of the nervous [ncbi.nlm.nih.gov]

Respiratoric

  • Hyposmia

    The sense of smell may be diminished (hyposmia) or completely absent (anosmia) if the part of the brain that processes smells is underdeveloped or missing. [ncbi.nlm.nih.gov]

Jaw & Teeth

  • Widely Spaced Teeth

    spaced teeth Abnormality of limbs 3-4 finger cutaneous syndactyly Clubfoot Sandal gap Abnormality of the breast Supernumerary nipple Abnormality of the cardiovascular system Ventricular septal defect Abnormality of the eye Deeply set eye Hypertelorism [ncbi.nlm.nih.gov]

    She had a wide mouth, decreased Cupid’s bow, short philtrum, full lips, an anterior reverse bite, enamel hypoplasia, widely spaced teeth, and abnormal gums. Figure 1. Clinical manifestations and auxiliary examinations of the case 1. [mdpi.com]

Ears

  • Low Set Ears

    […] malformation Low-set ears Microtia Growth abnormality Short stature IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. [ncbi.nlm.nih.gov]

    ZFHX4 ID, round face with full cheeks, a high forehead, ptosis, cornea opacities, an underdeveloped alae, a short philtrum, a cupid’s bow of the upper lip, down-turned corners of the mouth, micrognathia, low-set and prominent ears, and mild finger and [link.springer.com]

    Macrocephaly, ocular hypertelorism and low-set ears can also occur. Fifteen genes are involved in the duplicated segment. 7q11.23 Duplication. It is the reciprocal duplication of the deletion observed in Williams Syndrome. [scielo.br]

Skin

  • Sparse Eyebrows

    eyebrow Tented upper lip vermilion Thick vermilion border Thin upper lip vermilion Upslanted palpebral fissure Widely spaced teeth Abnormality of limbs 3-4 finger cutaneous syndactyly Clubfoot Sandal gap Abnormality of the breast Supernumerary nipple [ncbi.nlm.nih.gov]

    sparse eyebrow, ID. (187) Leri-Weill dyschondrosteosis 127300 Xpter-p22.32 Deletion SHOX Short stature, mesomelic limb shortening, characteristic “Madelung” deformity of the forearms (bowing of the radius and restriction of pronation/supination of the [link.springer.com]

Musculoskeletal

  • Dolichocephaly

    Deeply set eye Hypertelorism Hypotelorism Microphthalmia Abnormality of the genitourinary system Cryptorchidism Abnormality of the integument Preauricular skin tag Small nail Abnormality of the musculoskeletal system Congenital diaphragmatic hernia Dolichocephaly [ncbi.nlm.nih.gov]

Psychiatrical

  • Suggestibility

    Want to suggest a symptom? Please send suggestions to RareGuru! [rareguru.com]

    Naushad Biology Molecular Syndromology 2019 Genotype-phenotype correlations suggest that the major features of 1.12q42.2 microdeletion were attributed to the genes with a high probability of loss-of-function intolerance score in this deletion, namely [semanticscholar.org]

    Some may have characteristic facial features.[2906][2907][2905] Researchers have suggested the features are caused by disruption of at least four genes.[2906][11585] For more information, visit GARD. [rarediseases.org]

    We suggested that there might not be a simple one-to-one relationship between the 1q terminal deletion region and the clinical phenotype. [frontiersin.org]

    Further analysis suggested the involvement of several OMIM (Online Mendelian Inheritance in Man) genes, such as dispatched 1 (DISP1) and homo sapiens H2.0-like homeobox (HLX). [hereditasjournal.biomedcentral.com]

Face, Head & Neck

  • Narrow Forehead

    [from MedlinePlus Genetics] Show allHide all Abnormality of head or neck Anteverted nares Broad nasal tip Cleft palate Cleft upper lip Coarse facial features Deep philtrum Depressed nasal bridge Downslanted palpebral fissures High palate Narrow forehead [ncbi.nlm.nih.gov]

    […] or limited ability to walk (192) Miller-Dieker-syndrome/17p13.3 duplication syndrome 247200/613215 17p13.3 Deletion/Duplication PAFAH1B1 (LIS1), YWAHE Lissencephaly, microcephaly, wrinkled skin over the glabella and frontal suture, prominent occiput, narrow [link.springer.com]

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]

As a component of depression, psychomotor retardation could provide clinical and therapeutic clues for effective treatments [2]. [hereditasjournal.biomedcentral.com]

[…] contain candidate genes other than DISP1 for midline developmental anomalies such as cleft palate causing benign Pelger-Huet anomaly (OMIM 169400) and the EPHX1 gene involved in the microsomal epoxide hydrolase defect (OMIM 132810) causing phenytoin treatment [karger.com]

Patients have abnormalities in pituitary hormones similar to the hypothalamic Laron syndrome but are unresponsive to GH treatment. 3q13.31 Deletion. [scielo.br]

Prognosis

Adequate and timely language therapy would contribute to better prognosis in children with Skraban-Deardorff syndrome. [mdpi.com]

Etiology

Etiology This microdeletion was identified by array CGH (comparative genomic hybridization). The documents contained in this web site are presented for information purposes only. [orpha.net]

Epidemiology

Summary Epidemiology It has been reported in four unrelated patients. Clinical description The most common facial features include microcephaly, hypertelorism and thin upper lip. [orpha.net]

Pathophysiology

This deletion includes the MBD5 gene, which is implicated in the pathophysiology of seizures. Stereotyped behaviors are also present and these are similar to Rett syndrome or Angelman syndrome. [scielo.br]

Prevention

You are missing that, so your cells are unable to use this pathway to prevent and control any malignant cells. [solusykli.blogspot.com]

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