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https://www.readbyqxmd.com/read/28636205/progressive-scar14-with-unclear-speech-developmental-delay-tremor-and-behavioral-problems-caused-by-a-homozygous-deletion-of-the-sptbn2-pleckstrin-homology-domain
#1
Esra Yıldız Bölükbaşı, Muhammad Afzal, Sara Mumtaz, Nafees Ahmad, Sajid Malik, Aslıhan Tolun
We report on nine members of a consanguineous Pakistani family with primary presentation of intellectual disability, developmental delay, limb and gait ataxia, behavioral and speech problems, and tremor. By linkage mapping and exome sequencing we identified novel homozygous splicing variant c.6375-1G>C in SPTBN2. To date, only two other SPTBN2 mutations with recessive pattern of inheritance causing SCAR14 (spinocerebellar ataxia, autosomal recessive 14) that manifest with developmental ataxia and cognitive impairment, or cerebellar ataxia, mental retardation, and pyramidal signs have been reported...
June 21, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28635420/the-most-common-comorbidities-in-dandy-walker-syndrome-patients-a-systematic-review-of-case-reports
#2
Emelina Stambolliu, Myrsini Ioakeim-Ioannidou, Kimonas Kontokostas, Maria Dakoutrou, Antonis A Kousoulis
OBJECTIVE: Dandy-Walker syndrome (DWS) is a rare neurologic multi-entity malformation. This review aimed at reporting its main nonneurologic comorbidities. METHODS: Following PRISMA guidelines, search in Medline was conducted (2000-2014, keyword: dandy-walker). Age, sex, country, DWS type, consanguinity or siblings with DWS, and recorded coexistent conditions (by ICD10 category) were extracted for 187 patients (46.5% male, 43% from Asia) from 168 case reports. RESULTS: Diagnosis was most often set in <1 year old (40...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28635337/population-based-genetic-study-of-%C3%AE-thalassemia-mutations-in-mardan-division-khyber-pakhtunkhwa-province-pakistan
#3
Raj Muhammad, Muhammad Shakeel, Shoaib U Rehman, Muhammad A Lodhi
β-Thalassemia (β-thal) is the most prevalent hereditary blood disorder in Pakistan with a carrier rate of 5.0-8.0%. The homozygous affected children require frequent blood transfusions for their survival. This autosomal recessive disease can only be prevented through awareness programs, carrier screening, mutation detection, genetic counseling and prenatal diagnosis (PND). The present study aimed to determine the prevalence of various mutations causing β-thal and also to detect carriers of these mutations in families living in the Mardan Division, Khyber Pakhtunkhwa (KP) Province, Pakistan...
June 21, 2017: Hemoglobin
https://www.readbyqxmd.com/read/28630369/alpk3-gene-mutation-in-a-patient-with-congenital-cardiomyopathy-and-dysmorphic-features
#4
Ahmet Okay Cağlayan, Rabia Gonul Sezer, Hande Kaymakcalan, Ege Ulgen, Taner Yavuz, Jacob F Baranoski, Abdulkadir Bozaykut, Akdes Serin Harmanci, Yalim Yalcin, Mark W Youngblood, Katsuhito Yasuno, Kaya Bilguvar, Murat Gunel
Primary cardiomyopathy is one of the most common inherited cardiac diseases and harbors significant phenotypic and genetic heterogeneity. Because of this, genetic testing has become standard in treatment of this disease group. Indeed, in recent years, next-generation DNA sequencing has found broad applications in medicine, both as a routine diagnostic tool for genetic disorders and also as a high-throughput discovery tool for identifying novel disease causing genes. We describe a male infant with primary dilated cardiomyopathy that was diagnosed using intrauterine echocardiography, and found to progress to hypertrophic cardiomyopathy after birth...
June 19, 2017: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/28629604/novel-fkrp-mutations-in-a-japanese-mdc1c-sibship-clinically-diagnosed-with-fukuyama-congenital-muscular-dystrophy
#5
Mieko Yoshioka, Kazuhiro Kobayashi, Tatsushi Toda
INTRODUCTION: Fukuyama congenital muscular dystrophy (FCMD), caused by fukutin mutations, is the most common form of Japanese CMD. We followed a Japanese CMD sibship without fukutin mutation, and herein identified new FKRP mutations causing MDC1C rarely reported in Oriental countries. PATIENTS: Two affected siblings, individuals 1 (I-1, male) and 2 (I-2, female), were born uneventfully to unaffected, non-consanguineous parents. Severe hypotonia was soon apparent and serum CK levels were elevated: I-1: 1025 IU/L (normal range <130 IU/L) and I-2: 5350 IU/L...
June 16, 2017: Brain & Development
https://www.readbyqxmd.com/read/28626029/a-homozygous-founder-mutation-in-trappc6b-associates-with-a-neurodevelopmental-disorder-characterised-by-microcephaly-epilepsy-and-autistic-features
#6
Isaac Marin-Valencia, Gaia Novarino, Anide Johansen, Basak Rosti, Mahmoud Y Issa, Damir Musaev, Gifty Bhat, Eric Scott, Jennifer L Silhavy, Valentina Stanley, Rasim O Rosti, Jeremy W Gleeson, Farhad B Imam, Maha S Zaki, Joseph G Gleeson
BACKGROUND: Transport protein particle (TRAPP) is a multisubunit complex that regulates membrane trafficking through the Golgi apparatus. The clinical phenotype associated with mutations in various TRAPP subunits has allowed elucidation of their functions in specific tissues. The role of some subunits in human disease, however, has not been fully established, and their functions remain uncertain. OBJECTIVE: We aimed to expand the range of neurodevelopmental disorders associated with mutations in TRAPP subunits by exome sequencing of consanguineous families...
June 16, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28622416/rosacea-and-demodicidosis-associated-with-gain-of-function-mutation-in-stat1
#7
Julie Second, Anne-Sophie Korganow, Sarah Jannier, Anne Puel, Dan Lipsker
We report a family in which 3 of 5 children as well as the mother, had a gain-of-function (GOF) mutation in the signal transducer and activator of transcription (STAT1) associated with early-onset rosacea and demodicidosis. The proband case (Fig. 1) was a 13-year-old boy of non-consanguineous parents, known for a hypothyroidism, failure to thrive and chronic mucocutaneous candidiasis (CMC) since he was 5-6 years old. On examination, he had medio-facial erythema with telangiectasia, as well as sometimes pruritic papulopustular lesions of the face and neck...
June 16, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28621423/roles-of-the-cilium-associated-gene-ccdc11-in-left-right-patterning-and-in-laterality-disorders-in-humans
#8
Michal Gur, Enbal Ben-Tal Cohen, Olga Genin, Abraham Fainsod, Zeev Perles, Yuval Cinnamon
Axial determination occurs during early stages of embryogenesis. Flaws in laterality patterning result in abnormal positioning of visceral organs, as manifested in heterotaxy syndrome, or complete left-right inversion as in situs inversus totalis. These malformations are often associated with ciliopathies, as seen in primary ciliary dyskinesia. We have recently described a novel mutation in the Coiled-Coil Domain-Containing 11 (CCDC11) gene associated with laterality disorders in a consanguineous family of Arab-Muslim origin with two affected siblings presenting with diverse phenotypes, one with heterotaxy syndrome and the other with non-primary ciliary dyskinesia situs inversus totalis...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28620721/a-novel-gain-of-function-mutation-in-the-itpr1-suppressor-domain-causes-spinocerebellar-ataxia-with-altered-ca-2-signal-patterns
#9
Jillian P Casey, Taisei Hirouchi, Chihiro Hisatsune, Bryan Lynch, Raymond Murphy, Aimee M Dunne, Akitoshi Miyamoto, Sean Ennis, Nick van der Spek, Bronagh O'Hici, Katsuhiko Mikoshiba, Sally Ann Lynch
We report three affected members, a mother and her two children, of a non-consanguineous Irish family who presented with a suspected autosomal dominant spinocerebellar ataxia characterized by early motor delay, poor coordination, gait ataxia, and dysarthria. Whole exome sequencing identified a novel missense variant (c.106C>T; p.[Arg36Cys]) in the suppressor domain of type 1 inositol 1,4,5-trisphosphate receptor gene (ITPR1) as the cause of the disorder, resulting in a molecular diagnosis of spinocerebellar ataxia type 29...
June 15, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28615033/a-novel-frameshift-mutation-in-the-xpc-gene-in-a-moroccan-patient-a-case-report
#10
Yassamine Doubaj, Wiam Smaili, Fatima-Zahra Laarabi, Abdelaziz Sefiani
BACKGROUND: Xeroderma pigmentosum is an autosomal recessive inherited disease. The diagnosis is essentially based on clinical findings and the family history. This genodermatosis is genetically heterogeneous; to date, nine genes have been associated to this disorder. Based on the result of many studies, xeroderma pigmentosum complementation group C is the most common form of xeroderma pigmentosum. A founder mutation in the XPC gene was reported in the Maghreb region of northern Africa...
June 15, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28614222/next-generation-sequencing-identifies-pathogenic-and-modifier-mutations-in-a-consanguineous-chinese-family-with-hypertrophic-cardiomyopathy
#11
Xinlin Zhang, Jun Xie, Suhui Zhu, Yuhan Chen, Lian Wang, Biao Xu
Hypertrophic cardiomyopathy (HCM) is a highly heterogeneous disease displaying considerable interfamilial and intrafamilial phenotypic variation, including disease severity, age of onset, and disease progression. This poorly understood variance raises the possibility of genetic modifier effects, particularly in MYBPC3-associated HCM.In a large consanguineous Chinese HCM family, we identified 8 members harboring the MYBPC3 c.3624delC (p.Lys1209Serfs) disease-causing mutation, but with very disparate phenotypes...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28612835/coexisting-variants-in-ostm1-and-maneal-cause-a-complex-neurodegenerative-disorder-with-nbia-like-brain-abnormalities
#12
Diran Herebian, Bader Alhaddad, Annette Seibt, Thomas Schwarzmayr, Katharina Danhauser, Dirk Klee, Stefani Harmsen, Thomas Meitinger, Tim M Strom, Ansgar Schulz, Ertan Mayatepek, Tobias B Haack, Felix Distelmaier
Coexistence of different hereditary diseases is a known phenomenon in populations with a high consanguinity rate. The resulting clinical phenotypes are extremely challenging for physicians involved in the care of these patients. Here we describe a 6-year-old boy with co-occurrence of a homozygous splice defect in OSTM1, causing infantile malignant osteopetrosis, and a loss-of-function variant in MANEAL, which has not been associated with human disease so far. The child suffered from severe infantile-onset neurodegeneration that could not be stopped by bone marrow transplantation...
June 14, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28606030/assessing-breast-cancer-risk-estimates-based-on-the-gail-model-and-its-predictors-in-qatari-women
#13
Abdulbari Bener, Funda Çatan, Hanadi R El Ayoubi, Ahmet Acar, Wanis H Ibrahim
BACKGROUND: The Gail model is the most widely used breast cancer risk assessment tool. An accurate assessment of individual's breast cancer risk is very important for prevention of the disease and for the health care providers to make decision on taking chemoprevention for high-risk women in clinical practice in Qatar. AIM: To assess the breast cancer risk among Arab women population in Qatar using the Gail model and provide a global comparison of risk assessment...
July 2017: Journal of Primary Care & Community Health
https://www.readbyqxmd.com/read/28605509/a-novel-homozygous-umod-mutation-reveals-gene-dosage-effects-on-uromodulin-processing-and-urinary-excretion
#14
Noel Edwards, Eric Olinger, Jennifer Adam, Michael Kelly, Guglielmo Schiano, Simon A Ramsbottom, Richard Sandford, Olivier Devuyst, John A Sayer
Heterozygous mutations in UMOD encoding the urinary protein uromodulin are the most common genetic cause of autosomal dominant tubulointerstitial kidney disease (ADTKD). We describe the exceptional case of a patient from a consanguineous family carrying a novel homozygous UMOD mutation (p.C120Y) affecting a conserved cysteine residue within the EGF-like domain III of uromodulin. Comparison of heterozygote and homozygote mutation carriers revealed a gene dosage effect with unprecedented low levels of uromodulin and aberrant uromodulin fragments in the urine of the homozygote proband...
June 10, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28604947/-application-of-snp-array-technology-in-the-genetic-analysis-of-pediatric-patients-with-growth-retardation
#15
Shiyu Luo, Chunyun Fu, Shujie Zhang, Jin Wang, Xin Fan, Jingsi Luo, Rongyu Chen, Xuyun Hu, Haisong Qin, Chuan Li, Shan Ou, Qifei Li, Shaoke Chen
OBJECTIVE: To explore the value of single nucleotide polymorphism array (SNP-array) for the analysis of pediatric patients with growth retardation. METHODS: One hundred eighty one children with growth retardation were enrolled. DNA was extracted from peripheral samples from the patients, and whole genome copy number variations (CNVs) were detected using Illumina Human Cyto SNP-12. All identified CNVs were further analyzed with reference to databases including ClinGen, ClinVar, DECIPHER, OMIM and DGV as well as comprehensive review of literature from PubMed to determine their pathogenicity...
June 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28603069/the-case-for-high-resolution-extended-6-loci-hla-typing-for-identifying-related-donors-in-the-indian-subcontinent
#16
Rajat Kumar Agarwal, Ankita Kumari, Amit Sedai, Lalith Parmar, Rakesh Dhanya, Lawrence Faulkner
Three-loci low- or intermediate-resolution HLA typing is generally considered adequate in the related blood and marrow transplantation (BMT) context. However, a single high-resolution (HR) mismatch may have a similar adverse impact on BMT outcome as a low resolution (LR) one. We sought to determine the frequency of mismatches which may go undetected when standard typing (LR or HR/3-loci) is employed as against HR/6-loci typing for related donors compatibility testing and assess its impact on relevant BMT outcomes...
June 8, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28602422/loss-of-function-variants-in-mylk-cause-recessive-megacystis-microcolon-intestinal-hypoperistalsis-syndrome
#17
Danny Halim, Erwin Brosens, Françoise Muller, Michael F Wangler, Arthur L Beaudet, James R Lupski, Zeynep H Coban Akdemir, Michael Doukas, Hans J Stoop, Bianca M de Graaf, Rutger W W Brouwer, Wilfred F J van Ijcken, Jean-François Oury, Jonathan Rosenblatt, Alan J Burns, Dick Tibboel, Robert M W Hofstra, Maria M Alves
Megacystis microcolon intestinal hypoperistalsis syndrome (MMIHS) is a congenital disorder characterized by loss of smooth muscle contraction in the bladder and intestine. To date, three genes are known to be involved in MMIHS pathogenesis: ACTG2, MYH11, and LMOD1. However, for approximately 10% of affected individuals, the genetic cause of the disease is unknown, suggesting that other loci are most likely involved. Here, we report on three MMIHS-affected subjects from two consanguineous families with no variants in the known MMIHS-associated genes...
June 7, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28600779/the-landscape-of-genetic-diseases-in-saudi-arabia-based-on-the-first-1000-diagnostic-panels-and-exomes
#18
Dorota Monies, Mohamed Abouelhoda, Moeenaldeen AlSayed, Zuhair Alhassnan, Maha Alotaibi, Husam Kayyali, Mohammed Al-Owain, Ayaz Shah, Zuhair Rahbeeni, Mohammad A Al-Muhaizea, Hamad I Alzaidan, Edward Cupler, Saeed Bohlega, Eissa Faqeih, Maha Faden, Banan Alyounes, Dyala Jaroudi, Ewa Goljan, Hadeel Elbardisy, Asma Akilan, Renad Albar, Hesham Aldhalaan, Shamshad Gulab, Aziza Chedrawi, Bandar K Al Saud, Wesam Kurdi, Nawal Makhseed, Tahani Alqasim, Heba Y El Khashab, Hamoud Al-Mousa, Amal Alhashem, Imaduddin Kanaan, Talal Algoufi, Khalid Alsaleem, Talal A Basha, Fathiya Al-Murshedi, Sameena Khan, Adila Al-Kindy, Maha Alnemer, Sami Al-Hajjar, Suad Alyamani, Hasan Aldhekri, Ali Al-Mehaidib, Rand Arnaout, Omar Dabbagh, Mohammad Shagrani, Dieter Broering, Maha Tulbah, Amal Alqassmi, Maisoon Almugbel, Mohammed AlQuaiz, Abdulaziz Alsaman, Khalid Al-Thihli, Raashda A Sulaiman, Wajeeh Al-Dekhail, Abeer Alsaegh, Fahad A Bashiri, Alya Qari, Suzan Alhomadi, Hisham Alkuraya, Mohammed Alsebayel, Muddathir H Hamad, Laszlo Szonyi, Faisal Abaalkhail, Sulaiman M Al-Mayouf, Hamad Almojalli, Khalid S Alqadi, Hussien Elsiesy, Taghreed M Shuaib, Mohammed Zain Seidahmed, Ibraheem Abosoudah, Hana Akleh, Abdulaziz AlGhonaium, Turki M Alkharfy, Fuad Al Mutairi, Wafa Eyaid, Abdullah Alshanbary, Farrukh R Sheikh, Fahad I Alsohaibani, Abdullah Alsonbul, Saeed Al Tala, Soher Balkhy, Randa Bassiouni, Ahmed S Alenizi, Maged H Hussein, Saeed Hassan, Mohamed Khalil, Brahim Tabarki, Saad Alshahwan, Amira Oshi, Yasser Sabr, Saad Alsaadoun, Mustafa A Salih, Sarar Mohamed, Habiba Sultana, Abdullah Tamim, Moayad El-Haj, Saif Alshahrani, Dalal K Bubshait, Majid Alfadhel, Tariq Faquih, Mohamed El-Kalioby, Shazia Subhani, Zeeshan Shah, Nabil Moghrabi, Brian F Meyer, Fowzan S Alkuraya
In this study, we report the experience of the only reference clinical next-generation sequencing lab in Saudi Arabia with the first 1000 families who span a wide-range of suspected Mendelian phenotypes. A total of 1019 tests were performed in the period of March 2016-December 2016 comprising 972 solo (index only), 14 duo (parents or affected siblings only), and 33 trio (index and parents). Multigene panels accounted for 672 tests, while whole exome sequencing (WES) represented the remaining 347 tests. Pathogenic or likely pathogenic variants that explain the clinical indications were identified in 34% (27% in panels and 43% in exomes), spanning 279 genes and including 165 novel variants...
June 9, 2017: Human Genetics
https://www.readbyqxmd.com/read/28591755/a-novel-homozygous-missense-fshr-variant-associated-with-hypergonadotropic-hypogonadism-in-two-siblings-from-a-brazilian-family
#19
Monica M França, Antonio M Lerario, Mariana F A Funari, Mirian Y Nishi, Amanda M Narcizo, Maricilda P de Mello, Gil Guerra-Junior, Andrea T Maciel-Guerra, Berenice B Mendonça
Hypergonadotropic hypogonadism (HH) is defined by increased gonadotropin levels in men and women. Primary ovarian failure (POF) is a form of female infertility characterized by amenorrhea, hypoestrogenism, and elevated gonadotropin levels in women under the age of 40 years. Although several genes have been associated with POF, its causative genes remain to be identified. Here, we used whole-exome sequencing (WES) to study a consanguineous family with a 46,XX girl and a 46,XY man affected by HH. All exons of both siblings and their parents were captured and massively sequenced by WES, and the candidate variant was confirmed by Sanger sequencing...
June 8, 2017: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/28590501/novel-compound-heterozygous-mutations-of-aldh1a3-contribute-to-anophthalmia-in-a-non-consanguineous-chinese-family
#20
Yunqiang Liu, Yongjie Lu, Shasha Liu, Shunyao Liao
Anophthalmia is a rare eye development anomaly resulting in absent ocular globes or tissue in the orbit since birth. Here, we investigated a newborn with bilateral anophthalmia in a Chinese family. Exome sequencing revealed that compound heterozygous mutations c.287G > A (p.(Arg96His)) and c.709G > A (p.(Gly237Arg)) of the ALDH1A3 gene were present in the affected newborn. Both mutations were absent in all of the searched databases, including 10,000 in-house Chinese exome sequences, and these mutations were confirmed as having been transmitted from the parents...
June 5, 2017: Genetics and Molecular Biology
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