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  1. Article ; Online: Monogenic diabetes mellitus hidden in autoantibody-negative diabetes mellitus.

    Pruhova, Stepanka / Dusatkova, Petra

    Nature reviews. Endocrinology

    2023  Volume 19, Issue 3, Page(s) 132–133

    MeSH term(s) Humans ; Autoantibodies ; Diabetes Mellitus, Type 1/genetics ; Mutation
    Chemical Substances Autoantibodies
    Language English
    Publishing date 2023-01-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 2489381-X
    ISSN 1759-5037 ; 1759-5029
    ISSN (online) 1759-5037
    ISSN 1759-5029
    DOI 10.1038/s41574-022-00800-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Integrative Role of the SALL4 Gene: From Thalidomide Embryopathy to Genetic Defects of the Upper Limb, Internal Organs, Cerebral Midline, and Pituitary.

    Kodytková, Aneta / Dušátková, Petra / Amaratunga, Shenali Anne / Plachý, Lukáš / Průhová, Štěpánka / Lebl, Jan

    Hormone research in paediatrics

    2023  Volume 97, Issue 2, Page(s) 106–112

    Abstract: Background: The thalidomide disaster resulted in tremendous congenital malformations in more than 10,000 children in the late 1950s and early 1960s.: Summary: Although numerous putative mechanisms were proposed to explain thalidomide teratogenicity, ... ...

    Abstract Background: The thalidomide disaster resulted in tremendous congenital malformations in more than 10,000 children in the late 1950s and early 1960s.
    Summary: Although numerous putative mechanisms were proposed to explain thalidomide teratogenicity, it was confirmed only recently that thalidomide, rather its derivative 5-hydroxythalidomide (5HT) in a complex with the cereblon protein, interferes with early embryonic transcriptional regulation. 5HT induces selective degradation of SALL4, a principal transcriptional factor of early embryogenesis. Genetic syndromes caused by pathogenic variants of the SALL4 gene phenocopy thalidomide embryopathy with congenital malformations ranging from phocomelia, reduced radial ray, to defects of the heart, kidneys, ear, eye, and possibly cerebral midline and pituitary. SALL4 interacts with TBX5 and a handful of other transcriptional regulators and downregulates the Sonic hedgehog signaling pathway. Cranial midline defects, microcephaly, and short stature due to growth hormone deficiency have been occasionally reported in children carrying SALL4 pathogenic variants associated with generalized stunting of growth rather than just the loss of height attributable to the shortening of leg bones in many children with thalidomide embryopathy.
    Key messages: Thus, SALL4 joins the candidate gene list for monogenic syndromic pituitary insufficiency. In this review, we summarize the journey from the thalidomide disaster through the functions of the SALL4 gene to its link to the hormonal regulation of growth.
    MeSH term(s) Humans ; Abnormalities, Multiple/chemically induced ; Abnormalities, Multiple/genetics ; Fetal Diseases ; Hedgehog Proteins ; Thalidomide/adverse effects ; Transcription Factors/genetics ; Upper Extremity
    Chemical Substances Hedgehog Proteins ; SALL4 protein, human ; Thalidomide (4Z8R6ORS6L) ; Transcription Factors
    Language English
    Publishing date 2023-06-07
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2537278-6
    ISSN 1663-2826 ; 1663-2818
    ISSN (online) 1663-2826
    ISSN 1663-2818
    DOI 10.1159/000531452
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: SALL4 Phenotype in Four Generations of One Family: An Interplay of the Upper Limb, Kidneys, and the Pituitary.

    Kodytková, Aneta / Amaratunga, Shenali Anne / Zemková, Daniela / Maratová, Klára / Dušátková, Petra / Plachý, Lukáš / Průhová, Štěpánka / Koloušková, Stanislava / Lebl, Jan

    Hormone research in paediatrics

    2023  Volume 97, Issue 2, Page(s) 203–210

    Abstract: Introduction: The SALL4 gene encodes a transcription factor that is essential for early embryonic cellular differentiation of the epiblast and primitive endoderm. It is required for the development of neural tissue, kidney, heart, and limbs. Pathogenic ... ...

    Abstract Introduction: The SALL4 gene encodes a transcription factor that is essential for early embryonic cellular differentiation of the epiblast and primitive endoderm. It is required for the development of neural tissue, kidney, heart, and limbs. Pathogenic SALL4 variants cause Duane-radial ray syndrome (Okihiro syndrome), acro-renal-ocular syndrome, and Holt-Oram syndrome. We report a family with vertical transmission of a SALL4 pathogenic variant leading to radial hypoplasia and kidney dystopia in several generations with additional growth hormone deficiency (GHD) in the proband.
    Case presentation: Our male proband was born at the 39th week of gestation. He was born small for gestational age (SGA; birth weight 2,550 g, -2.2 SDS; length 47 cm, -2.0 SDS). He had bilateral asymmetrical radial ray malformation (consisting of radial hypoplasia, ulnar flexure, and bilateral aplasia of the thumb) and pelvic kidney dystopia, but no cardiac malformations, clubfoot, ocular coloboma, or Duane anomaly. He was examined for progressive short stature at the age of 3.9 years, where his IGF-1 was 68 μg/L (-1.0 SD), and growth hormone (GH) after stimulation 6.2 μg/L. Other pituitary hormones were normal. A brain CT revealed normal morphology of the cerebral midline and the pituitary. He had a dental anomaly - a central mandibular ectopic canine. MRI could not be done due to the presence of metal after multiple corrective plastic surgeries of his hands. His mother's and father's heights are 152.3 cm (-2.4 SD) and 177.8 cm (-0.4 SD), respectively. His father has a milder malformation of the forearm. The affected paternal grandfather (height 164 cm; -2.3 SD) has a radial ray defect with missing opposition of the thumb. The family reports a similar phenotype of radial dysplasia in the paternal grandfather's mother. The proband started GH therapy at age 6.5 years when his height was 109 cm (-2.8 SDS) and he experienced catch-up growth as expected in GHD. Puberty started spontaneously at the age of 12.5 years. At age 13, his height was 158.7 cm (-0.2 SDS). Whole-exome sequencing revealed a nonsense variant in the SALL4 gene c.1717C>T (p.Arg573Ter) in the proband, his father, and paternal grandfather.
    Conclusion: This is the first observation of a patient with a congenital upper limb defect due to a pathogenic SALL4 variant who has isolated GHD with no apparent cerebral or facial midline anomaly and has been successfully treated with growth hormone.
    MeSH term(s) Child, Preschool ; Humans ; Male ; Duane Retraction Syndrome/genetics ; Duane Retraction Syndrome/pathology ; Human Growth Hormone ; Hypopituitarism/genetics ; Kidney/pathology ; Phenotype ; Transcription Factors/genetics ; Upper Extremity/pathology ; Adult
    Chemical Substances Human Growth Hormone (12629-01-5) ; SALL4 protein, human ; Transcription Factors
    Language English
    Publishing date 2023-08-23
    Publishing country Switzerland
    Document type Case Reports
    ZDB-ID 2537278-6
    ISSN 1663-2826 ; 1663-2818
    ISSN (online) 1663-2826
    ISSN 1663-2818
    DOI 10.1159/000531996
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: First Use of Open-Source Automated Insulin Delivery AndroidAPS in Full Closed-Loop Scenario: Pancreas4ALL Randomized Pilot Study.

    Petruzelkova, Lenka / Neuman, Vit / Plachy, Lukas / Kozak, Milos / Obermannova, Barbora / Kolouskova, Stanislava / Pruhova, Stepanka / Sumnik, Zdenek

    Diabetes technology & therapeutics

    2023  Volume 25, Issue 5, Page(s) 315–323

    Abstract: Objective: ...

    Abstract Objective:
    MeSH term(s) Female ; Adolescent ; Young Adult ; Humans ; Adult ; Insulin/therapeutic use ; Diabetes Mellitus, Type 1/drug therapy ; Hypoglycemic Agents ; Pilot Projects ; Prospective Studies ; Insulin Infusion Systems ; Insulin, Regular, Human/therapeutic use ; Cross-Over Studies ; Blood Glucose
    Chemical Substances Insulin ; Hypoglycemic Agents ; Insulin, Regular, Human ; Blood Glucose
    Language English
    Publishing date 2023-03-13
    Publishing country United States
    Document type Randomized Controlled Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1452816-2
    ISSN 1557-8593 ; 1520-9156
    ISSN (online) 1557-8593
    ISSN 1520-9156
    DOI 10.1089/dia.2022.0562
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Genetic testing of children with familial tall stature: is it worth doing?

    Gregorova, Katerina / Plachy, Lukas / Dusatkova, Petra / Maratova, Klara / Neuman, Vit / Kolouskova, Stanislava / Snajderova, Marta / Obermannova, Barbora / Drnkova, Lenka / Soucek, Ondrej / Lebl, Jan / Sumnik, Zdenek / Pruhova, Stepanka

    The Journal of clinical endocrinology and metabolism

    2024  

    Abstract: Context: Familial tall stature (FTS) is considered to be a benign variant of growth with a presumed polygenic etiology. However, monogenic disorders with possible associated pathological features could also be hidden under the FTS phenotype.: ... ...

    Abstract Context: Familial tall stature (FTS) is considered to be a benign variant of growth with a presumed polygenic etiology. However, monogenic disorders with possible associated pathological features could also be hidden under the FTS phenotype.
    Objectives: To elucidate the genetic etiology in families with FTS and to describe their phenotype in detail.
    Design, settings and patients: Children with FTS (height in both the child and his/her taller parent >2 SD) referred to the Endocrinology center of Motol University Hospital were enrolled to the study. Their DNA was examined cytogenetically and via next-generation sequencing panel of 786 genes associated with growth. The genetic results were evaluated by the American College of Molecular Genetics and Genomics guidelines. All of the participants underwent standard endocrinological examination followed by specialized anthropometric evaluation.
    Results: In total, 34 children (19 girls) with FTS were enrolled in the study. Their median height and their taller parent's height were 3.1 SD and 2.5 SD, respectively. The genetic cause of FTS was elucidated in 11/34 (32.4%) children (47, XXX and 47, XYY karyotypes, SHOX duplication, and causative variants in NSD1 [in 2], SUZ12 [in 2], FGFR3, CHD8, GPC3, and PPP2R5D genes). Ten children had absent syndromic sings and 24 had dysmorphic features.
    Conclusion: Monogenic (and cytogenetic) etiology of FTS can be found among children with FTS. Genetic examination should be considered in all children with FTS regardless of the presence of dysmorphic features.
    Language English
    Publishing date 2024-02-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3029-6
    ISSN 1945-7197 ; 0021-972X
    ISSN (online) 1945-7197
    ISSN 0021-972X
    DOI 10.1210/clinem/dgae067
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  6. Article ; Online: Telemedicine maintains good glucose control in children with type 1 diabetes but is not time saving for healthcare professionals: KITES randomized study.

    Plachy, Lukas / Neuman, Vit / Velichova, Katerina / Slavenko, Matvei G / Santova, Alzbeta / Anne Amaratunga, Shenali / Obermannova, Barbora / Kolouskova, Stanislava / Pruhova, Stepanka / Sumnik, Zdenek / Petruzelkova, Lenka

    Diabetes research and clinical practice

    2024  Volume 209, Page(s) 111602

    Abstract: Aims: To evaluate glucose control non-inferiority and time benefits of telemedicine follow-up in children with type 1 diabetes (CwD).: Methods: In a single-center 9-month-long randomized controlled study (clinicaltrials.gov NCT05484427), 50 children ... ...

    Abstract Aims: To evaluate glucose control non-inferiority and time benefits of telemedicine follow-up in children with type 1 diabetes (CwD).
    Methods: In a single-center 9-month-long randomized controlled study (clinicaltrials.gov NCT05484427), 50 children were randomized to either telemedicine group (TG) followed-up distantly by e-mail, or to face-to-face group (FFG) attending standard personal visits. The primary endpoint was non-inferiority of HbA1c at final visit (level of non-inferiority was set at 5 mmol/mol). The secondary endpoints were subcutaneous glucose monitoring parameters and time consumption from both study subjects' and the physicians' point of view.
    Results: Non-inferiority of HbA1c in the TG was proven (mean HbA1C 45.8 ± 7.3 [TG] vs. 50.0 ± 12.6 [FFG] mmol/mol, 6.3 vs. 6.7 % DCCT, p = 0.17; between groups HbA1C difference 95 % CI -10.2 to 1.9 mmol/mol). Telemedicine saved time for participants (mean visit duration [MVD] 50 [TG] vs. 247 min [FFG], p < 0.001). There were no other differences between groups neither in CGM parameters nor physician's time consumption (MVD 19 [TG] vs. 20 min [FFG], p = 0.58).
    Conclusions: Nine-month telemedicine follow-up of the children with well-controlled T1D is not inferior to standard face-to-face visits. Telemedicine visits saved time for the participants but not for their diabetologists.
    MeSH term(s) Child ; Humans ; Diabetes Mellitus, Type 1 ; Blood Glucose ; Glycated Hemoglobin ; Blood Glucose Self-Monitoring ; Telemedicine ; Hypoglycemic Agents
    Chemical Substances Blood Glucose ; Glycated Hemoglobin ; Hypoglycemic Agents
    Language English
    Publishing date 2024-03-02
    Publishing country Ireland
    Document type Randomized Controlled Trial ; Journal Article
    ZDB-ID 632523-3
    ISSN 1872-8227 ; 0168-8227
    ISSN (online) 1872-8227
    ISSN 0168-8227
    DOI 10.1016/j.diabres.2024.111602
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  7. Article ; Online: Response to Letter to the Editor from Youn Hee Jee: "Familial Short Stature - A Novel Phenotype of Growth Plate Collagenopathies".

    Plachy, Lukas / Dusatkova, Petra / Elblova, Lenka / Petruzelkova, Lenka / Sumnik, Zdenek / Lebl, Jan / Pruhova, Stepanka

    The Journal of clinical endocrinology and metabolism

    2021  Volume 107, Issue 1, Page(s) e445–e446

    MeSH term(s) Growth Plate ; Humans ; Phenotype
    Language English
    Publishing date 2021-09-10
    Publishing country United States
    Document type Letter ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 3029-6
    ISSN 1945-7197 ; 0021-972X
    ISSN (online) 1945-7197
    ISSN 0021-972X
    DOI 10.1210/clinem/dgab665
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  8. Article ; Online: Invaluable Role of Consanguinity in Providing Insight into Paediatric Endocrine Conditions: Lessons Learnt from Congenital Hyperinsulinism, Monogenic Diabetes, and Short Stature.

    Amaratunga, Shenali Anne / Tayeb, Tara Hussein / Dusatkova, Petra / Pruhova, Stepanka / Lebl, Jan

    Hormone research in paediatrics

    2021  Volume 95, Issue 1, Page(s) 1–11

    Abstract: Consanguineous families have often played a role in the discovery of novel genes, especially in paediatric endocrinology. At this time, it has been estimated that over 8.5% of all children worldwide have consanguineous parents. Consanguinity is linked to ...

    Abstract Consanguineous families have often played a role in the discovery of novel genes, especially in paediatric endocrinology. At this time, it has been estimated that over 8.5% of all children worldwide have consanguineous parents. Consanguinity is linked to demographic, cultural, and religious practises and is more common in some areas around the world than others. In children with endocrine conditions from consanguineous families, there is a greater probability that a single-gene condition with autosomal recessive inheritance is causative. From 1966 and the first description of Laron syndrome, through the discovery of the first KATP channel genes ABCC8 and KCNJ11 causing congenital hyperinsulinism (CHI) in the 1990s, to recent discoveries of mutations in YIPF5 as the first cause of monogenic diabetes due to the disruption of the endoplasmic reticulum (ER)-to-Golgi trafficking in the β-cell and increased ER stress; positive genetic findings in children from consanguinity have been important in elucidating novel genes and mechanisms of disease, thereby expanding knowledge into disease pathophysiology. The aim of this narrative review was to shed light on the lessons learned from consanguineous pedigrees with the help of 3 fundamental endocrine conditions that represent an evolving spectrum of pathophysiological complexity - from CHI, a typically single-cell condition, to monogenic diabetes which presents with uniform biochemical parameters (hyperglycaemia and glycosuria), despite varying aetiologies, up to the genetic regulation of human growth - the most complex developmental phenomenon.
    MeSH term(s) Child ; Congenital Hyperinsulinism/genetics ; Consanguinity ; Diabetes Mellitus/genetics ; Dwarfism ; Humans ; KATP Channels/genetics ; Mutation
    Chemical Substances KATP Channels
    Language English
    Publishing date 2021-11-30
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2537278-6
    ISSN 1663-2826 ; 1663-2818
    ISSN (online) 1663-2826
    ISSN 1663-2818
    DOI 10.1159/000521210
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  9. Article ; Online: A case of digenic maturity onset diabetes of the young with heterozygous variants in both HNF1Α and HNF1Β genes.

    Patouni, Konstantina / Cinek, Ondrej / Pruhova, Stepanka / Elblova, Lenka / Xatzipsalti, Maria / Sertedaki, Amalia / Vazeou, Andriani

    European journal of medical genetics

    2021  Volume 64, Issue 9, Page(s) 104264

    Abstract: Background: Maturity onset diabetes of the young (MODY) is the most commonly reported form of monogenic diabetes in the pediatric population. Only a few cases of digenic MODY have been reported up to now.: Case report: A female patient was diagnosed ... ...

    Abstract Background: Maturity onset diabetes of the young (MODY) is the most commonly reported form of monogenic diabetes in the pediatric population. Only a few cases of digenic MODY have been reported up to now.
    Case report: A female patient was diagnosed with diabetes at the age of 7 years and was treated with insulin. A strong family history of diabetes was present in the maternal side of the family. The patient also presented hypomagnesemia, glomerulocystic kidney disease and a bicornuate uterus. Genetic testing of the patient revealed that she was a double heterozygous carrier of HNF1A gene variant c.685C > T; (p.Arg229Ter) and a whole gene deletion of the HNF1B gene. Her mother was a carrier of the same HNF1A variant.
    Conclusion: Digenic inheritance of MODY pathogenic variants is probably more common than currently reported in literature. The use of Next Generation Sequencing panels in testing strategies for MODY could unmask such cases that would otherwise remain undiagnosed.
    MeSH term(s) Child ; Diabetes Mellitus, Type 2/genetics ; Diabetes Mellitus, Type 2/pathology ; Female ; Hepatocyte Nuclear Factor 1-alpha/genetics ; Hepatocyte Nuclear Factor 1-beta/genetics ; Heterozygote ; Humans ; Kidney Diseases/genetics ; Kidney Diseases/pathology ; Kidney Diseases, Cystic/genetics ; Kidney Diseases, Cystic/pathology ; Mutation ; Phenotype ; Renal Tubular Transport, Inborn Errors/genetics ; Renal Tubular Transport, Inborn Errors/pathology ; Uterus/abnormalities
    Chemical Substances HNF1A protein, human ; HNF1B protein, human ; Hepatocyte Nuclear Factor 1-alpha ; Hepatocyte Nuclear Factor 1-beta (138674-15-4)
    Language English
    Publishing date 2021-06-20
    Publishing country Netherlands
    Document type Case Reports ; Journal Article
    ZDB-ID 2184135-4
    ISSN 1878-0849 ; 1769-7212
    ISSN (online) 1878-0849
    ISSN 1769-7212
    DOI 10.1016/j.ejmg.2021.104264
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  10. Article ; Online: Search for a time- and cost-saving genetic testing strategy for maturity-onset diabetes of the young.

    Dusatkova, Petra / Pavlikova, Marketa / Elblova, Lenka / Larionov, Vladyslav / Vesela, Klara / Kolarova, Katerina / Sumnik, Zdenek / Lebl, Jan / Pruhova, Stepanka

    Acta diabetologica

    2022  Volume 59, Issue 9, Page(s) 1169–1178

    Abstract: Aims: Correct genetic diagnosis of maturity-onset diabetes of the young (MODY) is beneficial for person's diabetes management compared to no genetic testing. Aim of the present study was a search for optimal time- and cost-saving strategies by comparing ...

    Abstract Aims: Correct genetic diagnosis of maturity-onset diabetes of the young (MODY) is beneficial for person's diabetes management compared to no genetic testing. Aim of the present study was a search for optimal time- and cost-saving strategies by comparing two approaches of genetic testing of participants with clinical suspicion of MODY.
    Methods: A total of 121 consecutive probands referred for suspicion of MODY (Group A) were screened using targeted NGS (tNGS), while the other 112 consecutive probands (Group B) underwent a single gene test based on phenotype, and in cases of negative findings, tNGS was conducted. The study was performed in two subsequent years. The genetic results, time until reporting of the final results and financial expenses were compared between the groups.
    Results: MODY was confirmed in 30.6% and 40.2% probands from Groups A and B, respectively; GCK-MODY was predominant (72.2% in Group A and 77.8% in Group B). The median number of days until results reporting was 184 days (IQR 122-258) in Group A and 91 days (44-174) in Group B (p < 0.00001). Mean costs per person were higher for Group A (639 ± 30 USD) than for Group B (584 ± 296 USD; p = 0.044).
    Conclusions: The two-step approach represented a better strategy for genetic investigation of MODY concerning time and costs compared to direct tNGS. Although a single-gene investigation clarified the diabetes aetiology in the majority of cases, tNGS could reveal rare causes of MODY and expose possible limitations of both standard genetic techniques and clinical evaluation.
    MeSH term(s) Diabetes Mellitus, Type 2/diagnosis ; Diabetes Mellitus, Type 2/genetics ; Genetic Testing/methods ; Humans ; Mutation ; Phenotype
    Language English
    Publishing date 2022-06-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1097676-0
    ISSN 1432-5233 ; 0940-5429
    ISSN (online) 1432-5233
    ISSN 0940-5429
    DOI 10.1007/s00592-022-01915-x
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