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Bjoraker KJ, Eggerding C, Ellenberg E, Hollander S, Holmes BM, Lindstrom K, McNutt M, Miller S, Northrup H, Rogers M, Rose S, Scott M, Shim S, Wardley B, Wessenberg L, Bilder DA. Best practice recommendations for the management of anxiety during the pegvaliase journey. Mol Genet Metab 2024; 141:107737. [PMID: 38043481 DOI: 10.1016/j.ymgme.2023.107737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/16/2023] [Accepted: 11/16/2023] [Indexed: 12/05/2023]
Abstract
BACKGROUND Pegvaliase, an enzyme substitution therapy, is a treatment option for phenylketonuria (PKU). Due to the neuropathophysiology and disease burden of PKU, individuals can experience baseline anxiety unrelated to pegvaliase therapy. In addition, there are aspects of pegvaliase therapy that may be anxiety-inducing for those considering or receiving treatment. The aim of this manuscript is to present best practice recommendations for the identification and management of anxiety symptoms that can occur along the pegvaliase journey. METHODS A modified Delphi approach was used to seek consensus among a multidisciplinary panel of experts. To this end, an in-person meeting was held that was preceded by a medical specialist- and patient-specific survey to develop preliminary recommendations on ways to address anxiety along the pegvaliase journey. After the meeting, an additional survey was conducted to rank the proposed solutions and mitigation strategies from which a set of recommendations was developed. All recommendations were voted on with the aim of consensus generation, defined as achieving ≥75% agreement among experts. RESULTS The panel reached consensus on a total of 28 best practice recommendations for the management of anxiety during the pre-treatment, induction and titration, early maintenance (pre-efficacy), and late maintenance (post-efficacy) stages. The recommendations offer strategies to identify and address the most common causes of pegvaliase-related anxiety, including self-injection, side effects, the titration schedule, prescribed dietary changes, and variable time to efficacy. Overall, managing anxiety in those considering or receiving pegvaliase involves patient-centered communication, shared decision-making, and personalized treatment plans. CONCLUSIONS The best practice recommendations described herein can guide healthcare providers in proactively addressing anxiety during the different stages of pegvaliase treatment, and support providers with initiating and managing pegvaliase in individuals who may experience baseline and treatment-related anxiety.
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Affiliation(s)
| | | | | | - Suzanne Hollander
- Department of Clinical Nutrition, Boston Children's Hospital, Boston, MA, USA; Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Brittany M Holmes
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | | | - Markey McNutt
- University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Suzanne Miller
- Program for Inherited Metabolic Diseases, Mount Sinai Health System, New York, NY, USA
| | - Hope Northrup
- Department of Pediatrics, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth) and Children's Memorial Hermann Hospital, Houston, TX, USA
| | | | - Sarah Rose
- BioMarin Pharmaceutical Inc., Novato, CA, USA.
| | - Mia Scott
- Individual with PKU, Tucson, AZ, USA
| | - Soo Shim
- Ann and Robert H. Lurie Children's Hospital, Chicago, IL, USA
| | | | | | - Deborah A Bilder
- Department of Psychiatry, University of Utah Huntsman Mental Health Institute, Salt Lake City, UT, USA
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Olaniyan HS, Briscoe C, Muhongo M, Pascoal R, Armando A, Santos B, McGann PT. Early diagnosis of sickle cell disease at birth hospitals and vaccination centers in Angola using point-of-care tests. Blood Adv 2023; 7:5860-5867. [PMID: 37399450 PMCID: PMC10558616 DOI: 10.1182/bloodadvances.2023010631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 07/05/2023] Open
Abstract
Sickle cell disease (SCD) is a life-threatening blood disorder affecting >500 000 infants annually, mostly in sub-Saharan Africa. Most infants do not have access to an early diagnosis and die early from treatable complications of SCD. Universal newborn screening (NBS) is not yet available in any African country for a variety of reasons, including lack of laboratory capacity, difficulty in tracking affected infants, and the relatively short stay of mothers and newborns at maternity hospitals. Several point-of-care (POC) tests for SCD have been recently developed and validated, but the 2 most well-established tests (Sickle SCAN and HemoTypeSC) have not been rigorously compared with one another. In this study, we aimed to evaluate and compare these 2 POC tests to screen infants aged ≤6 months in Luanda, Angola. Challenging the traditional NBS paradigm, we performed testing not only at maternity centers, but also at vaccination centers across Luanda. We enrolled 2000 babies and performed 1000 tests with each POC test. Both tests demonstrated diagnostic accuracy, with 98.3% of Sickle SCAN results and 95.3% of HemoTypeSC results aligning with the gold standard isoelectric focusing hemoglobin pattern. When the result was provided at the POC, 92% of infants were linked to SCD care compared with 56% in the pilot Angolan NBS program, which used centralized laboratory testing. This study demonstrates the real-world feasibility and accuracy of POC tests to screen infants for SCD in Angola. This study also suggests that including vaccination centers may improve the capture rate for early infant SCD screening programs.
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Affiliation(s)
| | - Christine Briscoe
- Department of Pediatrics, Warren Alpert Medical School of Brown University and Lifespan Comprehensive Sickle Cell Center, Providence, RI
| | | | - Rui Pascoal
- Hospital Pediátrico David Bernardino, Luanda, Angola
| | | | - Brigida Santos
- Hospital Pediátrico David Bernardino, Luanda, Angola
- Instituto Hematológico Pediátrico, Luanda, Angola
| | - Patrick T. McGann
- Department of Pediatrics, Warren Alpert Medical School of Brown University and Lifespan Comprehensive Sickle Cell Center, Providence, RI
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Adams AD, Fiesco-Roa MÓ, Wong L, Jenkins GP, Malinowski J, Demarest OM, Rothberg PG, Hobert JA. Phenylalanine hydroxylase deficiency treatment and management: A systematic evidence review of the American College of Medical Genetics and Genomics (ACMG). Genet Med 2023; 25:100358. [PMID: 37470789 DOI: 10.1016/j.gim.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/08/2022] [Accepted: 12/08/2022] [Indexed: 07/21/2023] Open
Abstract
PURPOSE Elevated serum phenylalanine (Phe) levels due to biallelic pathogenic variants in phenylalanine hydroxylase (PAH) may cause neurodevelopmental disorders or birth defects from maternal phenylketonuria. New Phe reduction treatments have been approved in the last decade, but uncertainty on the optimal lifespan goal Phe levels for patients with PAH deficiency remains. METHODS We searched Medline and Embase for evidence of treatment concerning PAH deficiency up to September 28, 2021. Risk of bias was evaluated based on study design. Random-effects meta-analyses were performed to compare IQ, gestational outcomes, and offspring outcomes based on Phe ≤ 360 μmol/L vs > 360 μmol/L and reported as odds ratio and 95% CI. Remaining results were narratively synthesized. RESULTS A total of 350 studies were included. Risk of bias was moderate. Lower Phe was consistently associated with better outcomes. Achieving Phe ≤ 360 μmol/L before conception substantially lowered the risk of negative effect to offspring in pregnant individuals (odds ratio = 0.07, 95% CI = 0.04-0.14; P < .0001). Adverse events due to pharmacologic treatment were common, but medication reduced Phe levels, enabling dietary liberalization. CONCLUSIONS Reduction of Phe levels to ≤360 μmol/L through diet or medication represents effective interventions to treat PAH deficiency.
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Affiliation(s)
- April D Adams
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX; Division of Maternal-Fetal Medicine, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
| | - Moisés Ó Fiesco-Roa
- Programa de Maestría y Doctorado en Ciencias Médicas, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico; Laboratorio de Citogenética, Instituto Nacional de Pediatría, Mexico City, Mexico
| | | | | | | | | | - Paul G Rothberg
- Department of Pathology & Laboratory Medicine, University of Rochester Medical Center, Rochester, NY
| | - Judith A Hobert
- University of Utah School of Medicine, Salt Lake City, UT; ARUP Laboratories, Salt Lake City, UT
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Naviaux RK. Mitochondrial and metabolic features of salugenesis and the healing cycle. Mitochondrion 2023; 70:131-163. [PMID: 37120082 DOI: 10.1016/j.mito.2023.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 03/24/2023] [Accepted: 04/23/2023] [Indexed: 05/01/2023]
Abstract
Pathogenesis and salugenesis are the first and second stages of the two-stage problem of disease production and health recovery. Salugenesis is the automatic, evolutionarily conserved, ontogenetic sequence of molecular, cellular, organ system, and behavioral changes that is used by living systems to heal. It is a whole-body process that begins with mitochondria and the cell. The stages of salugenesis define a circle that is energy- and resource-consuming, genetically programmed, and environmentally responsive. Energy and metabolic resources are provided by mitochondrial and metabolic transformations that drive the cell danger response (CDR) and create the three phases of the healing cycle: Phase 1-Inflammation, Phase 2-Proliferation, and Phase 3-Differentiation. Each phase requires a different mitochondrial phenotype. Without different mitochondria there can be no healing. The rise and fall of extracellular ATP (eATP) signaling is a key driver of the mitochondrial and metabolic reprogramming required to progress through the healing cycle. Sphingolipid and cholesterol-enriched membrane lipid rafts act as rheostats for tuning cellular sensitivity to purinergic signaling. Abnormal persistence of any phase of the CDR inhibits the healing cycle, creates dysfunctional cellular mosaics, causes the symptoms of chronic disease, and accelerates the process of aging. New research reframes the rising tide of chronic disease around the world as a systems problem caused by the combined action of pathogenic triggers and anthropogenic factors that interfere with the mitochondrial functions needed for healing. Once chronic pain, disability, or disease is established, salugenesis-based therapies will start where pathogenesis-based therapies end.
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Affiliation(s)
- Robert K Naviaux
- The Mitochondrial and Metabolic Disease Center, Departments of Medicine, and Pediatrics, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C107, MC#8467, San Diego, CA 92103.
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Tankeu AT, Pavlidou DC, Superti-Furga A, Gariani K, Tran C. Overweight and obesity in adult patients with phenylketonuria: a systematic review. Orphanet J Rare Dis 2023; 18:37. [PMID: 36814307 PMCID: PMC9945382 DOI: 10.1186/s13023-023-02636-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 02/06/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Excess weight is a rising concern in patients with phenylketonuria (PKU). It is commonly observed in children and adolescents with PKU; but data on adults are inconsistent. This review aims to summarize available data on excess weight in adult PKU individuals. METHODS We conducted a systematic search of literature in English, from inception to October 2021, on PubMed and Embase to identify articles on overweight and obesity in adult PKU patients. Prevalence of overweight and obesity, body mass index (BMI) and gender differences were the outcomes of interest. RESULTS Of 260 articles identified, only 8 fulfilled quality criteria for inclusion after screening of titles, abstracts and full texts. The mean BMI of adult PKU patients in these studies ranged from 26 ± 5.4 to 30.3 ± 1.8 kg/m2. When compared to matched controls, adult PKU patients had higher BMI and higher prevalence of obesity. However, results were inconsistent when PKU adults were compared to the general population. The prevalence of obesity in the included studies varied widely between 4.5% up to 72% in individual studies. Obesity was 2-3 times more frequent in female PKU patients. CONCLUSIONS Excess weight is frequent in adult PKU patients, especially in females, even if the difference with the general population is debatable. The heterogeneity of the studies makes it difficult to interpret the results and the factors that contribute to obesity. Content of the diet, psychological status, diet-associated disordered eating, patient's social environment and lifestyle are listed as potentials contributors to excess weight in PKU adult population. Further studies are needed to better elucidate this question. In the meantime, weight control and healthy eating habits should be considered in the management and follow-up of these patients.
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Affiliation(s)
- Aurel T. Tankeu
- grid.8515.90000 0001 0423 4662Division of Genetic Medicine, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland
| | - Despina Christina Pavlidou
- grid.8515.90000 0001 0423 4662Division of Genetic Medicine, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland
| | - Andrea Superti-Furga
- grid.8515.90000 0001 0423 4662Division of Genetic Medicine, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland
| | - Karim Gariani
- grid.150338.c0000 0001 0721 9812Service of Endocrinology, Diabetes, Nutrition and Therapeutic Patient Education, Geneva University Hospitals and Geneva University, Geneva, Switzerland
| | - Christel Tran
- Division of Genetic Medicine, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland.
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Phenylalanine free infant formula in the dietary management of phenylketonuria. Orphanet J Rare Dis 2023; 18:16. [PMID: 36698214 PMCID: PMC9878783 DOI: 10.1186/s13023-023-02621-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/15/2023] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Phenylalanine-free infant formula is an essential source of safe protein in a phenylalanine restricted diet, but its efficacy is rarely studied. We report a multicentre, open, longitudinal, prospective intervention study on a phenylalanine-free infant formula (PKU Start: Vitaflo International Ltd.). RESULTS This was a 2-part study: part I (28 days short term evaluation) and part II (12 months extension). Data was collected on infant blood phenylalanine concentrations, dietary intake, growth, and gastrointestinal tolerance. Ten infants (n = 8 males, 80%), with a median age of 14 weeks (range 4-36 weeks) were recruited from 3 treatment centres in the UK. Nine of ten infants completed the 28-day follow-up (one caregiver preferred the usual phenylalanine-free formula and discontinued the study formula after day 14) and 7/9 participated in study part II. The phenylalanine-free infant formula contributed a median of 57% (IQR 50-62%) energy and 53% (IQR 33-66%) of total protein intake from baseline to the end of the part II extension study. During the 12-month follow-up, infants maintained normal growth and satisfactory blood phenylalanine control. Any early gastrointestinal symptoms (constipation, colic, vomiting and poor feeding) improved with time. CONCLUSION The study formula was well tolerated, helped maintain good metabolic control, and normal growth in infants with PKU. The long-term efficacy of phenylalanine-free infant formula should continue to be observed and monitored.
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Multiplex Snapshot minisequencing for the detection of common PAH gene mutations in Iranian patients with Phenylketonuria. IRANIAN BIOMEDICAL JOURNAL 2023; 27:46-57. [PMID: 36624928 PMCID: PMC9971712 DOI: 10.52547/ibj.3856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Background Phenylketonuria is a common inborn defect of amino acid metabolism in the world. This failure is caused by an autosomal recessive insufficiency of the hepatic enzyme hyperphenylalaninemia (PAH), which catalyzes the irreversible hydroxylation of phenylalanine to tyrosine. More than 1,040 different disease-causing mutations have already been identified in the PAH gene. The most prominent complication of Phenylketonuria, if not diagnosed and treated, is severe mental retardation. Hence, early diagnosis and initiation of nutritional therapy are the most significant measures in preventing this mental disorder. Given these data, we developed a simple and rapid molecular test to detect the most frequent PAH mutations. Methods Multiplex assay was developed based on the SNaPshot minisequencing approach to simultaneously perform genotyping of the 10 mutations at the PAH gene. We optimized detection of these mutations in one multiplex PCR, followed by 10 single-nucleotide extension reactions. DNA sequencing assay was also used to verify genotyping results obtained by SNaPshot minisequencing. Result All 10 genotypes were determined based on the position and the fluorescent color of the peaks in a single electropherogram. Sequencing results of these frequent mutations showed that by using this method, a 100% detection rate could be achieved in the Iranian population. Conclusion SNaPshot minisequencing can be useful as a secondary test in neonatal screening for HPA in neonates with a positive screening test, and it is also suitable for carrier screening. The assay can be easily applied for accurate and time- and cost-efficient genotyping of the selected SNPs in various population.
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Morton G, Thomas S, Roberts P, Clark V, Imrie J, Morrison A. The importance of early diagnosis and views on newborn screening in metachromatic leukodystrophy: results of a Caregiver Survey in the UK and Republic of Ireland. Orphanet J Rare Dis 2022; 17:403. [PMID: 36329444 PMCID: PMC9635117 DOI: 10.1186/s13023-022-02550-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/20/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022] Open
Abstract
Metachromatic Leukodystrophy (MLD) is a rare, autosomal recessive lysosomal storage disorder caused by a deficiency of the enzyme arylsulfatase A (ARSA). MLD causes progressive loss of motor function and severe decline in cognitive function, leading to premature death. Early diagnosis of MLD provides the opportunity to begin treatment before the disease progresses and causes severe disability. MLD is not currently included in newborn screening (NBS) in the UK. This study consisted of an online survey, and follow-up semi-structured interviews open to MLD patients or caregivers, aged 18 years and over. The aims of the study were to understand the importance of early diagnosis and to establish the views of families and caregivers of patients with MLD on NBS. A total of 24 patients took part in the survey, representing 20 families (two families had two children with MLD, one family had three children with MLD). Following on from the survey, six parents participated in the interviews. Our data showed diagnostic delay from first symptoms was between 0 and 3 years, with a median of 1 year (n = 18); during this time deterioration was rapid, especially in earlier onset MLD. In patients with late infantile MLD (n = 10), 50% were wheelchair dependent, 30% were unable to speak, and 50% were tube fed when a diagnosis of MLD was confirmed. In patients with early juvenile MLD (n = 5), over half used a wheelchair some of the time, had uncontrollable crying, and difficulty speaking (all 60%) before or at the time of diagnosis. A high degree of support was expressed for NBS among caregivers, 95% described it as very or extremely important and 86% believed detection of MLD at birth would have changed their child’s future. One parent expressed their gratitude for an early diagnosis as a result of familial MLD screening offered at birth and how it had changed their child’s future: “It did and it absolutely has I will be forever grateful for his early diagnosis thanks to his older sister.” The rapid rate of deterioration in MLD makes it an essential candidate for NBS, particularly now the first gene therapy (Libmeldy™) has been approved by the European Medicines Agency. Libmeldy™ has also been recommended as a treatment option in England and Wales by the National Institute for Health and Care Excellence (NICE) and is being made available to patients in Scotland via the Scottish Medicines Consortium’s ultra-orphan pathway.
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Bratkovic D, Margvelashvili L, Tchan MC, Nisbet J, Smith N. PTC923 (sepiapterin) lowers elevated blood phenylalanine in subjects with phenylketonuria: a phase 2 randomized, multi-center, three-period crossover, open-label, active controlled, all-comers study. Metabolism 2022; 128:155116. [PMID: 34973284 DOI: 10.1016/j.metabol.2021.155116] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/21/2021] [Accepted: 12/21/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND & AIM PTC923 (formerly CNSA-001), an oral formulation of sepiapterin, a natural precursor of intracellular tetrahydrobiopterin (BH4), has been shown in humans to induce larger increases in circulating BH4 vs. sapropterin dihydrochloride. Sapropterin reduces blood phenylalanine (Phe) by ≥20-30% in a minority of subjects with PKU. This was a Phase 2 randomized, multicenter, three-period crossover, open-label, active controlled, all-comers [regardless of phenylalanine hydroxylase (PAH) variants] comparison of PTC923 60 mg/kg, PTC923 20 mg/kg and sapropterin 20 mg/kg in 24 adults with phenylketonuria (PKU) and hyperphenylalaninemia. METHODS Eligible subjects were adult men or women (18-60 y) with PKU. Subjects enrolled received 7 days of once-daily oral treatment with PTC923 20 mg/kg/day, PTC923 60 mg/kg/day and sapropterin dihydrochloride 20 mg/kg/day each in a random order. Treatments were separated by a 7-day washout. Subjects maintained their usual pre-study diet, including consumption of amino acid mixtures. Blood Phe was measured on Day 1 (predose baseline), Day 3, Day 5, and Day 7 of each treatment period. RESULTS Least squares mean changes (SE) from baseline in blood Phe were: -206.4 (41.8) μmol/L for PTC923 60 mg/kg (p < 0.0001); -146.9 (41.8) μmol/L for PTC923 20 mg/kg (p = 0.0010); and - 91.5 (41.7) μmol/L for sapropterin (p = 0.0339). Effects of PTC923 60 mg/kg on blood Phe vs. sapropterin were significantly larger (p = 0.0098) and faster in onset with a significantly larger mean reduction in blood Phe at day 3 of treatment, p = 0.0135 (20 mg/kg) and p = 0.0007 (60 mg/kg). Only PTC923 60 mg/kg reduced blood Phe in classical PKU subjects (n = 11, p = 0.0287). The mean blood Phe reduction (PTC923 60 mg/kg) in a cofactor responder analysis (n = 8; baseline Phe ≥300 μmol/L and blood Phe reduction ≥30%) was -463.3 μmol/L (SE 51.5) from baseline. Adverse events were mostly mild to moderate, transient, and similar across treatment groups with no serious adverse events or discontinuations. CONCLUSIONS The substantially significantly better effect of PTC923 60 mg/kg on blood Phe reduction vs. sapropterin supports further clinical development of PTC923 for PKU; ANZCTR number, ACTRN12618001031257.
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Affiliation(s)
- Drago Bratkovic
- PARC Clinical Research, Royal Adelaide Hospital, South Australia, Australia
| | | | - Michel C Tchan
- Department of Genetic Medicine, Westmead Hospital, Australia and University of Sydney, Sydney, New South Wales, Australia
| | - Janelle Nisbet
- Mater Misericordiae Limited, Queensland Diabetes and Endocrine Centre, Brisbane, Queensland, Australia
| | - Neil Smith
- PTC Therapeutics Inc, South Plainfield, NJ, USA.
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Aitkenhead L, Krishna G, Ellerton C, Moinuddin M, Matcham J, Shiel L, Hossain S, Kiffin M, Foley J, Skeath R, Cleary M, Lachmann R, Murphy E. Long-term cognitive and psychosocial outcomes in adults with phenylketonuria. J Inherit Metab Dis 2021; 44:1353-1368. [PMID: 34145605 DOI: 10.1002/jimd.12413] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 05/31/2021] [Accepted: 06/16/2021] [Indexed: 12/22/2022]
Abstract
Previous studies have suggested that cognitive and psychosocial underfunctioning in early-treated adults with phenylketonuria (PKU) may be explained by suboptimal adherence to dietary treatments, however, these studies often employ small samples, with different outcome measures, definitions and cut-offs. Samples have also tended to comprise participants with a limited range of blood phenylalanine concentrations, and often individuals who may not have been treated early enough to avoid neurological damage. In this study, we explore the impact of lifetime dietary control, as indicated by blood phenylalanine concentrations in childhood, adolescence and adulthood, on long-term cognitive and psychosocial outcomes in a large sample of adults with PKU who were diagnosed by neonatal screening and commenced on dietary treatment within the first month of life. One hundred and fifty-four participants underwent cognitive testing, assessing attention, learning, working memory, language, executive functioning and processing speed. One hundred and forty-nine completed measures of psychosocial functioning, documenting educational, occupational, quality of life, emotional and social outcomes which were compared with a group of healthy controls. Many adults with PKU demonstrated cognitive impairments, most frequently affecting processing speed (23%), executive function (20%) and learning (12%). Cognitive outcomes were related to measures of historic metabolic control, but only processing speed was significantly related to phenylalanine concentration at the time of testing after controlling for historic levels. Adults with PKU did not, however, differ from controls in educational, occupational, quality of life or emotional outcomes, or on a measure of family functioning, and showed only minor differences in relationship style. These findings have implications for patient counselling and decisions regarding the management of PKU in adulthood.
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Affiliation(s)
- Lynne Aitkenhead
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
- UCL Institute of Neurology, London, UK
| | - Gauri Krishna
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
| | - Charlotte Ellerton
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
| | - Md Moinuddin
- UCL Institute of Child Health, London, UK
- Faculty of Health, Social Care & Medicine, Edge Hill University, Ormskirk, UK
| | - Jessica Matcham
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
| | - Lisha Shiel
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
| | - Shasoty Hossain
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
| | - Marianne Kiffin
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
| | - Jennifer Foley
- UCL Institute of Neurology, London, UK
- Department of Neuropsychology, National Hospital of Neurology & Neurosurgery, London, UK
| | - Rachel Skeath
- Department of Metabolic Medicine, Great Ormond Street Hospital, London, UK
| | - Maureen Cleary
- Department of Metabolic Medicine, Great Ormond Street Hospital, London, UK
- Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | - Robin Lachmann
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
- UCL Institute of Neurology, London, UK
| | - Elaine Murphy
- Charles Dent Metabolic Unit, National Hospital for Neurology and Neurosurgery, London, UK
- UCL Institute of Neurology, London, UK
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Juengst ET. Anticipating the ethical, legal, and social implications of human genome research: An ongoing experiment. Am J Med Genet A 2021; 185:3369-3376. [PMID: 34155808 DOI: 10.1002/ajmg.a.62405] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/28/2021] [Accepted: 06/05/2021] [Indexed: 11/11/2022]
Abstract
Dr. Victor McKusick was a founding member of the joint NIH-DOE working group that designed the federal effort to address the ethical, legal, and social implications of the US Human Genome Project in 1989. A key feature of this effort was its commitment to anticipating genomics-driven questions before they became urgent practical dilemmas, by complementing the scientific effort to map and sequence the human genome with projects by a wide range of social scientists, humanities scholars, legal experts, and public educators designed to equip society with the foresight required to optimize the public welfare benefits of new genomic information. This article describes the origins of that experiment and the model of anticipatory science policy that it produced, as one piece of Dr. McKusick's extraordinary intellectual legacy.
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Affiliation(s)
- Eric T Juengst
- UNC Center for Bioethics, Department of Social Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
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12
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Remec ZI, Trebusak Podkrajsek K, Repic Lampret B, Kovac J, Groselj U, Tesovnik T, Battelino T, Debeljak M. Next-Generation Sequencing in Newborn Screening: A Review of Current State. Front Genet 2021; 12:662254. [PMID: 34122514 PMCID: PMC8188483 DOI: 10.3389/fgene.2021.662254] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/13/2021] [Indexed: 12/27/2022] Open
Abstract
Newborn screening was first introduced at the beginning of the 1960s with the successful implementation of the first phenylketonuria screening programs. Early expansion of the included disorders was slow because each additional disorder screened required a separate test. Subsequently, the technological advancements of biochemical methodology enabled the scaling-up of newborn screening, most notably with the implementation of tandem mass spectrometry. In recent years, we have witnessed a remarkable progression of high-throughput sequencing technologies, which has resulted in a continuous decrease of both cost and time required for genetic analysis. This has enabled more widespread use of the massive multiparallel sequencing. Genomic sequencing is now frequently used in clinical applications, and its implementation in newborn screening has been intensively advocated. The expansion of newborn screening has raised many clinical, ethical, legal, psychological, sociological, and technological concerns over time. This review provides an overview of the current state of next-generation sequencing regarding newborn screening including current recommendations and potential challenges for the use of such technologies in newborn screening.
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Affiliation(s)
- Ziga I. Remec
- Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Katarina Trebusak Podkrajsek
- Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, Institute of Biochemistry and Molecular Genetics, University of Ljubljana, Ljubljana, Slovenia
| | - Barbka Repic Lampret
- Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Jernej Kovac
- Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Urh Groselj
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Chair of Pediatrics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Tine Tesovnik
- Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Tadej Battelino
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Chair of Pediatrics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Marusa Debeljak
- Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, Institute of Biochemistry and Molecular Genetics, University of Ljubljana, Ljubljana, Slovenia
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13
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Van Vliet G, Grosse SD. [Newborn screening for congenital hypothyroidism and congenital adrenal hyperplasia: Benefits and costs of a successful public health program]. Med Sci (Paris) 2021; 37:528-534. [PMID: 34003099 PMCID: PMC8387970 DOI: 10.1051/medsci/2021053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Newborn screening is an important public health program and a triumph of preventive medicine. Economic analyses show that the benefits of newborn screening clearly outweigh the costs for certain diseases, but not necessarily for other ones. This is due to the great diversity of the natural history of the diseases detected, to the fact that each of these diseases considered individually is rare, and to differences in the effectiveness of interventions. In addition, the benefit-cost ratio of screening for a particular disorder may differ between countries, specifically between high-income and low- and middle-income countries. The burden of a disorder may also be alleviated by increased clinical awareness and effective clinical services, even in the absence of newborn screening. In this article, we focus on economic analyses of newborn screening for primary congenital hypothyroidism, which has been in place in high-income countries for roughly 40 years, and for classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency. Screening for the latter is not yet universal, even in high-income countries, although the lack of universal implementation may reflect factors other than economic considerations.
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Affiliation(s)
- Guy Van Vliet
- Service d'endocrinologie et Centre de recherche, Centre hospitalier universitaire Sainte-Justine et Département de pédiatrie, Université de Montréal, 3175 Côte Sainte-Catherine, Montréal (Québec) H3T 1C5, Canada
| | - Scott D Grosse
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, 30341, États-Unis
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14
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Cornel MC, Rigter T, Jansen ME, Henneman L. Neonatal and carrier screening for rare diseases: how innovation challenges screening criteria worldwide. J Community Genet 2021; 12:257-265. [PMID: 33074550 PMCID: PMC8141077 DOI: 10.1007/s12687-020-00488-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 10/14/2020] [Indexed: 10/26/2022] Open
Abstract
Screening for rare diseases first began more than 50 years ago with neonatal bloodspot screening (NBS) for phenylketonuria, and carrier screening for Tay-Sachs disease, sickle cell anaemia and β-thalassaemia. NBS's primary aim is health gain for children, while carrier screening enables autonomous reproductive choice. While screening can be beneficial, it also has the potential to cause harm and thus decisions are needed on whether a specific screening is worthwhile. These decisions are usually based on screening principles and criteria. Technological developments, both treatment driven and test driven, have led to expansions in neonatal screening and carrier screening. This article demonstrates how the dynamics and expansions in NBS and carrier screening have challenged four well-known screening criteria (treatment, test, target population and programme evaluation), and the decision-making based on them. We show that shifting perspectives on screening criteria for NBS as well as carrier screening lead to converging debates in these separate fields. For example, the child is traditionally considered to be the beneficiary in NBS, but the family and society can also benefit. Vice versa, carrier screening may be driven by disease prevention, rather than reproductive autonomy, raising cross-disciplinary questions regarding potential beneficiaries and which diseases to include. In addition, the stakeholders from these separate fields vary: Globally NBS is often governed as a public health programme while carrier screening is usually available via medical professionals. The article concludes with a call for an exchange of vision and knowledge among all stakeholders of both fields to attune the dynamics of screening.
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Affiliation(s)
- Martina C Cornel
- Clinical Genetics, Section Community Genetics, Amsterdam Public Health Research Institute, Amsterdam Reproduction and Development Research Institute, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, Amsterdam, The Netherlands.
| | - Tessel Rigter
- Clinical Genetics, Section Community Genetics, Amsterdam Public Health Research Institute, Amsterdam Reproduction and Development Research Institute, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Marleen E Jansen
- Clinical Genetics, Section Community Genetics, Amsterdam Public Health Research Institute, Amsterdam Reproduction and Development Research Institute, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Lidewij Henneman
- Clinical Genetics, Section Community Genetics, Amsterdam Public Health Research Institute, Amsterdam Reproduction and Development Research Institute, Vrije Universiteit Amsterdam, Amsterdam UMC, De Boelelaan 1117, Amsterdam, The Netherlands
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15
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Grosse SD, Van Vliet G. Challenges in Assessing the Cost-Effectiveness of Newborn Screening: The Example of Congenital Adrenal Hyperplasia. Int J Neonatal Screen 2020; 6:E82. [PMID: 33239603 PMCID: PMC7712219 DOI: 10.3390/ijns6040082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 12/27/2022] Open
Abstract
Generalizing about the cost-effectiveness of newborn screening (NBS) is difficult due to the heterogeneity of disorders included in NBS panels, along with data limitations. Furthermore, it is unclear to what extent evidence about cost-effectiveness should influence decisions to screen for specific disorders. Screening newborns for congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency can serve as a useful test case, since there is no global consensus on whether CAH should be part of NBS panels. Published and unpublished cost-effectiveness analyses of CAH screening have yielded mixed findings, largely due to differences in methods and data sources for estimating health outcomes and associated costs of early versus late diagnosis as well as between-country differences. Understanding these methodological challenges can help inform future analyses and could also help interested policymakers interpret the results of economic evaluations.
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Affiliation(s)
- Scott D. Grosse
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Guy Van Vliet
- Endocrinology Service and Research Center of the Sainte-Justine Hospital and Department of Pediatrics, University of Montreal, Montreal, QC H3T 1C5, Canada;
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16
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Gariani K, Nascimento M, Superti-Furga A, Tran C. Clouds over IMD? Perspectives for inherited metabolic diseases in adults from a retrospective cohort study in two Swiss adult metabolic clinics. Orphanet J Rare Dis 2020; 15:210. [PMID: 32811506 PMCID: PMC7433045 DOI: 10.1186/s13023-020-01471-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/21/2020] [Indexed: 12/03/2022] Open
Abstract
Background Inherited metabolic diseases (IMD) are complex medical conditions. Thanks to improvements in diagnosis and treatment, a growing number of pediatric IMD patients reach adulthood. Thus, clinical care of adults with IMD has emerged as a new and challenging reality. This purpose of this study of adults with IMD in an adult metabolic clinic at two academic hospitals (Lausanne and Geneva) was to help inform decisions on the future organization of health care for this group of patients. Methods All adult patients with a biochemical and/or genetic diagnosis of IMD followed at the clinics were included in the study. Electronic patient records were reviewed for clinical features, diagnostic studies, treatment and long-term outcome. Data of undiagnosed patients referred for suspected IMD were analyzed separately. Results 126 patients were included in the study. The most prevalent group of diseases was small molecules disorders with 82 (65%) patients, followed by energy defects disorders with 29 (23%) patients and complex molecules disorders with 15 (12%) patients. Overall, 64% of patients were diagnosed before, and 36% after the age 16 years. Among the 126 cases, 51% suffered from medical complications. 79% of the patients were receiving a specific treatment for their disease. Among the 138 undiagnosed patients referred for suspicion of IMD, investigations lead to a genetic diagnosis in 24 (17%) patients. 19 had confirmation of an IMD, 5 were found to have another genetic condition. Conclusions This retrospective study reveals significant features of adult IMD cohort. The disorders are heterogeneous, and there is no one-size-fits-all approach – treatment must be tailored to fit each specific disorder in each individual patient. Even patients who are followed at the dedicated clinic are not protected from metabolic decompensations and/or chronic organ-specific complications. While it is commonly assumed that patients with IMD are more stable once they become adults, our data show that the diseases continue to exact a lifelong toll. A coordinated monitoring of target organs by a multidisciplinary team is needed. To ensure that the success in diagnosis and treatment of individuals with IMD is sustained, there is a clear requirement for adequately staffed adult IMD clinics.
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Affiliation(s)
- Karim Gariani
- Division of Endocrinology, Diabetes, Nutrition and Therapeutic Patient Education, Geneva University Hospitals, Geneva, Switzerland
| | - Marina Nascimento
- University of Lausanne Faculty of Biology and Medicine, Lausanne, Switzerland
| | - Andrea Superti-Furga
- Center for Molecular Diseases, Division of Genetic Medicine, Lausanne University Hospital, Beaumont-02/248, 1011, Lausanne, Switzerland
| | - Christel Tran
- Division of Endocrinology, Diabetes, Nutrition and Therapeutic Patient Education, Geneva University Hospitals, Geneva, Switzerland. .,Center for Molecular Diseases, Division of Genetic Medicine, Lausanne University Hospital, Beaumont-02/248, 1011, Lausanne, Switzerland.
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17
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Sundermann B, Garde S, Dehghan Nayyeri M, Weglage J, Rau J, Pfleiderer B, Feldmann R. Approaching altered inhibitory control in phenylketonuria: A functional MRI study with a Go-NoGo task in young female adults. Eur J Neurosci 2020; 52:3951-3962. [PMID: 32277784 DOI: 10.1111/ejn.14738] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/30/2020] [Accepted: 03/31/2020] [Indexed: 11/27/2022]
Abstract
Subtle executive function deficits, particularly regarding inhibitory control, have been reported in patients with phenylketonuria (PKU) despite early dietary treatment. Purpose of this study was to assess whether young female adults with PKU exhibit altered neural activity underlying such deficits, particularly in a fronto-parietal cognitive control network (CCN). Behavioural data and functional magnetic resonance imaging (fMRI) data were acquired during a Go-NoGo task in 16 young adult patients with PKU and 17 control subjects. Hypothesis-driven analyses of behavioural and fMRI data in the CCN were supplemented by exploratory whole brain activation analyses. PKU patients exhibited a trend towards higher errors of commission. Patients exhibited marginally increased activation associated with inhibitory control in only one CCN core region (right middle frontal gyrus, p = .043). Whole brain analyses revealed widespread relatively increased activation in adults with PKU in the main task contrast (NoGo > Go). This increased activation was mainly observed outside the CCN and largely overlapped with the default mode network (DMN). In conclusion, only subtle inhibitory control deficits and associated brain activity differences were observed in young adults with PKU. Thus, this work adds to the notion that this particular population seems to be only slightly affected by such cognitive deficits. While there were also only minimal increases when compared to healthy subjects in brain activity in a cognitive control network, we observed more widespread activation increases outside this network. These results support the assumption of DMN dysfunction in PKU.
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Affiliation(s)
- Benedikt Sundermann
- Department of Clinical Radiology, Medical Faculty - University of Muenster - and University Hospital Muenster, Muenster, Germany
| | - Stefan Garde
- Department of Clinical Radiology, Medical Faculty - University of Muenster - and University Hospital Muenster, Muenster, Germany
| | - Mahboobeh Dehghan Nayyeri
- Department of Clinical Radiology, Medical Faculty - University of Muenster - and University Hospital Muenster, Muenster, Germany.,Department of Psychosomatic Medicine and Psychotherapy, LVR Clinic, Medical Faculty of the Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.,Department of Psychosomatic Medicine and Psychotherapy, University Hospital Muenster, Muenster, Germany
| | - Josef Weglage
- Department of General Pediatrics, University Hospital Muenster, Muenster, Germany
| | - Johanna Rau
- Department of Clinical Radiology, Medical Faculty - University of Muenster - and University Hospital Muenster, Muenster, Germany.,Department of Neurology, University Hospital Muenster, Muenster, Germany
| | - Bettina Pfleiderer
- Department of Clinical Radiology, Medical Faculty - University of Muenster - and University Hospital Muenster, Muenster, Germany.,Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, Muenster, Germany
| | - Reinhold Feldmann
- Department of General Pediatrics, University Hospital Muenster, Muenster, Germany
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18
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Mitchell AL, Watanabe M. Introduction to the special issue on "Genetic Screening and Testing". Birth Defects Res 2020; 112:289-292. [PMID: 32083383 DOI: 10.1002/bdr2.1637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Anna L Mitchell
- Genetics and Genome Sciences, Case Western Reserve University, School of Medicine
| | - Michiko Watanabe
- Department of Pediatrics, Case Western Reserve University, School of Medicine, Rainbow Babies and Children's Hospital, The Congenital Heart Collaborative, Cleveland, Ohio
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19
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Molecular Analysis of PKU-Associated PAH Mutations: A Fast and Simple Genotyping Test. Methods Protoc 2018; 1:mps1030030. [PMID: 31164572 PMCID: PMC6481045 DOI: 10.3390/mps1030030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/06/2018] [Accepted: 08/06/2018] [Indexed: 11/16/2022] Open
Abstract
Neonatal screening for phenylketonuria (PKU, OMIM: 261600) was introduced at the end of the 1960s. We developed a rapid and simple molecular test for the most frequent phenylalanine hydroxylase (PAH, Gene ID: 5053) mutations. Using this method to detect the 18 most frequent mutations, it is possible to achieve a 75% detection rate in Italian population. The variants selected also reach a high detection rate in other populations, for example, 70% in southern Germany, 68% in western Germany, 76% in Denmark, 68% in Sweden, 63% in Poland, and 60% in Bulgaria. We successfully applied this confirmation test in neonatal screening for hyperphenylalaninemias using dried blood spots and obtained the genotype in approximately 48 h. The method was found to be suitable as second tier test in neonatal screening for hyperphenylalaninemias in neonates with a positive screening test. This test can also be useful for carrier screening because it can bypass the entire coding sequence and intron–exon boundaries sequencing, thereby overcoming the questions that this approach implies, such as new variant interpretations.
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20
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Roth K. „Enthält eine Phenylalaninquelle“. CHEM UNSERER ZEIT 2018. [DOI: 10.1002/ciuz.201800858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Friedman JM, Cornel MC, Goldenberg AJ, Lister KJ, Sénécal K, Vears DF. Genomic newborn screening: public health policy considerations and recommendations. BMC Med Genomics 2017; 10:9. [PMID: 28222731 PMCID: PMC5320805 DOI: 10.1186/s12920-017-0247-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 02/14/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The use of genome-wide (whole genome or exome) sequencing for population-based newborn screening presents an opportunity to detect and treat or prevent many more serious early-onset health conditions than is possible today. METHODS The Paediatric Task Team of the Global Alliance for Genomics and Health's Regulatory and Ethics Working Group reviewed current understanding and concerns regarding the use of genomic technologies for population-based newborn screening and developed, by consensus, eight recommendations for clinicians, clinical laboratory scientists, and policy makers. RESULTS Before genome-wide sequencing can be implemented in newborn screening programs, its clinical utility and cost-effectiveness must be demonstrated, and the ability to distinguish disease-causing and benign variants of all genes screened must be established. In addition, each jurisdiction needs to resolve ethical and policy issues regarding the disclosure of incidental or secondary findings to families and ownership, appropriate storage and sharing of genomic data. CONCLUSION The best interests of children should be the basis for all decisions regarding the implementation of genomic newborn screening.
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Affiliation(s)
- Jan M. Friedman
- Department of Medical Genetics, University of British Columbia, Vancouver, Canada
- Child & Family Research Institute, Vancouver, Canada
| | - Martina C. Cornel
- Section Clinical Genetics, Department of Clinical Genetics, VU University Medical Center, Amsterdam, Holland
- EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, Holland
| | - Aaron J. Goldenberg
- The Center for Genetic Research Ethics and Law, Department of Bioethics, Case Western Reserve University, Cleveland, OH USA
| | - Karla J. Lister
- Office of Population Health Genomics, Public Health Division, Department of Health, Government of Western Australia, Perth, Australia
| | - Karine Sénécal
- Centre of Genomics and Policy, Department of Human Genetics, McGill University, Montreal, Canada
| | - Danya F. Vears
- Centre for Biomedical Ethics and Law, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
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22
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Costich JF, Durst AL. The Impact of the Affordable Care Act on Funding for Newborn Screening Services. Public Health Rep 2016; 131:160-6. [PMID: 26843682 DOI: 10.1177/003335491613100123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE The Affordable Care Act requires most health plans to cover the federal Recommended Uniform Screening Panel of newborn screening (NBS) tests with no cost sharing. However, state NBS programs vary widely in both the number of mandated tests and their funding mechanisms, including a combination of state laboratory fees, third-party billing, and other federal and state funding. We assessed the potential impact of the Affordable Care Act coverage mandate on states' NBS funding. METHOD We performed an extensive review of the refereed literature, federal and state agency reports, relevant organizations' websites, and applicable state laws and regulations; interviewed 28 state and federal officials from August to December 2014; and then assessed the interview findings manually. RESULTS Although a majority of states had well-established systems for including laboratory-based NBS tests in bundled charges for newborn care, billing practices for critical congenital heart disease and newborn hearing tests were less uniform. Most commonly, birthing facilities either prepaid the costs of laboratory-based tests when acquiring the filter paper kits, or the facilities paid for the tests when the kits were submitted. Some states had separate arrangements for billing Medicaid, and smaller facilities sometimes contracted with hearing test vendors that billed families separately. CONCLUSION Although the Affordable Care Act coverage mandate may offset some state NBS funding for the screenings themselves, federal support is still required to assure access to the full range of NBS program services. Limiting reimbursement to the costs of screening tests alone would undermine the common practice of using screening charges to fund follow-up services counseling, and medical food or formula, particularly for low-income families.
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Affiliation(s)
- Julia F Costich
- University of Kentucky, Department of Health Policy and Management, Lexington, KY
| | - Andrea L Durst
- University of Pittsburgh, Department of Human Genetics, Pittsburgh, PA
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23
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Zerjav Tansek M, Groselj U, Angelkova N, Anton D, Baric I, Djordjevic M, Grimci L, Ivanova M, Kadam A, Kotori V, Maksic H, Marginean O, Margineanu O, Miljanovic O, Moldovanu F, Muresan M, Nanu M, Samardzic M, Sarnavka V, Savov A, Stojiljkovic M, Suzic B, Tincheva R, Tahirovic H, Toromanovic A, Usurelu N, Battelino T. Phenylketonuria screening and management in southeastern Europe - survey results from 11 countries. Orphanet J Rare Dis 2015; 10:68. [PMID: 26025111 PMCID: PMC4451731 DOI: 10.1186/s13023-015-0283-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 05/12/2015] [Indexed: 08/30/2023] Open
Abstract
BACKGROUND We aimed to assess the current state of PKU screening and management in the region of southeastern Europe. METHODS A survey was performed involving all identified professionals responsible for the PKU management in the 11 countries from South-Eastern region of Europe (Albania, Bulgaria, Bosnia and Herzegovina, Croatia, Kosovo, Macedonia, Moldova, Montenegro, Romania, Serbia, Slovenia). The questionnaire was designed to assess the characteristics regarding PKU management in three main areas: nation-wide characteristics, PKU screening, and characteristics of the PKU management in the responding centre. It consisted of 56 questions. The distribution and collection of the questionnaires (via e-mail) was taking place from December 2013 to March 2014. RESULTS Responses from participants from 11 countries were included; the countries cumulative population is approx. 52.5 mio. PKU screening was not yet introduced in 4 of 11 countries. Reported PKU incidences ranged from 1/7325 to 1/39338 (and were not known for 5 countries). National PKU guidelines existed in 5 of 11 countries and 7 of 11 countries had PKU registry (registries included 40 to 194 patients). The number of PKU centers in each country varied from 1 to 6. Routine genetic diagnostics was reported in 4 of 11 countries. Most commonly used laboratory method to assess phenylalanine levels was fluorometric. Tetrahydrobiopterine was used in only 2 of 11 countries. Most frequently, pediatricians were caring for the patients. Dietitian was a member of PKU team in only 4 of 11 countries, while regular psychological assessments were performed in 6 of 11 countries. Patient's PKU society existed in 7 of 11 countries. CONCLUSIONS The region of southeastern Europe was facing certain important challenges of PKU screening and management. Neonatal PKU screening should be introduced throughout the region. Furthermore, PKU management was falling behind internationally established standards-of-care in many aspects.
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Affiliation(s)
- Mojca Zerjav Tansek
- University Children's Hospital Ljubljana, UMC Ljubljana, Ljubljana, Slovenia.
| | - Urh Groselj
- University Children's Hospital Ljubljana, UMC Ljubljana, Ljubljana, Slovenia.
| | | | - Dana Anton
- Clinical Hospital for Children "Sfanta Maria", Iasi, Romania.
| | - Ivo Baric
- Department of Pediatrics, University Hospital Center Zagreb, Zagreb, Croatia. .,School of Medicine, University of Zagreb, Zagreb, Croatia.
| | - Maja Djordjevic
- Mother and Child Health Care Institute of Serbia, Belgrade, Serbia.
| | - Lindita Grimci
- University Hospital Center "Mother Teresa", Tirana, Albania.
| | | | - Adil Kadam
- University Pediatric Hospital Sofia, Sofia, Bulgaria.
| | - Vjosa Kotori
- Pediatric Clinic, University Clinical Center Pristina, Pristina, Kosovo.
| | - Hajrija Maksic
- University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina.
| | | | | | - Olivera Miljanovic
- Institute for Sick Children, Clinical Center of Montenegro, Podgorica, Montenegro.
| | | | - Mariana Muresan
- Clinical Hospital for Children "Iuliu Hateganu", Cluj-Napoca, Romania.
| | - Michaela Nanu
- Mother and Child Health Care Institute "Alfred Rusescu", Bucharest, Romania.
| | - Mira Samardzic
- Institute for Sick Children, Clinical Center of Montenegro, Podgorica, Montenegro.
| | - Vladimir Sarnavka
- Department of Pediatrics, University Hospital Center Zagreb, Zagreb, Croatia.
| | | | - Maja Stojiljkovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia.
| | - Biljana Suzic
- Children Hospital Banja Luka, Banja Luka, Republic of Srpska, Bosnia and Herzegovina.
| | | | - Husref Tahirovic
- Department of Medical Sciences, Academy of Sciences and Arts of Bosnia and Herzegovina, Sarajevo, Bosnia and Herzegovina.
| | - Alma Toromanovic
- Department of Pediatrics, University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina.
| | - Natalia Usurelu
- Institute of Mother and Child, Centre of Reproductive Health and Medical Genetics, Chisinau, Moldova.
| | - Tadej Battelino
- University Children's Hospital Ljubljana, UMC Ljubljana, Ljubljana, Slovenia. .,Department of Pediatrics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
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24
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Ordooei M, Jafarizadeh M, Mirzaei M, Ashoori H, Zare A, Shojaeifar H. Prevalence of neonatal hyperphenylalaninemia in yazd province, iran. IRANIAN JOURNAL OF MEDICAL SCIENCES 2015; 40:292-3. [PMID: 25999633 PMCID: PMC4430895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 10/11/2014] [Accepted: 10/19/2014] [Indexed: 11/23/2022]
Affiliation(s)
- Mahtab Ordooei
- Department of Pediatrics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran;
| | - Majid Jafarizadeh
- Children Growth Disorder Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran;
| | - Mohsen Mirzaei
- Children Growth Disorder Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran;
| | - Hasan Ashoori
- Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ali Zare
- Children Growth Disorder Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran;
| | - Hossein Shojaeifar
- Children Growth Disorder Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran;
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25
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Abstract
PRACTICAL RELEVANCE The health of the cat is a complex interaction between its environment (nurture) and its genetics (nature). Over 70 genetic mutations (variants) have been defined in the cat, many involving diseases, structural abnormalities and clinically relevant health concerns. As more of the cat's genome is deciphered, less commonly will the term 'idiopathic' be used regarding the diagnosis of diseases and unique health conditions. State-of-the-art health care will include DNA profiling of the individual cat, and perhaps its tumor, to establish the best treatment approaches. Genetic testing and eventually whole genome sequencing should become routine diagnostics for feline health care. GLOBAL IMPORTANCE Cat breeds have disseminated around the world. Thus, practitioners should be aware of the breeds common to their region and the mutations found in those regional populations. Specific random-bred populations can also have defined genetic characteristics and mutations. AUDIENCE This review of 'the good, the bad and the ugly' DNA variants provides the current state of knowledge for genetic testing and genetic health management for cats. It is aimed at feline and general practitioners wanting to update and review the basics of genetics, what tests are available for cats and sources for genetic testing. The tables are intended to be used as references in the clinic. Practitioners with a high proportion of cat breeder clientele will especially benefit from the review. EVIDENCE BASE The data presented is extracted from peer-reviewed publications pertaining to mutation identification, and relevant articles concerning the heritable trait and/or disease. The author also draws upon personal experience and expertise in feline genetics.
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Affiliation(s)
- Leslie A Lyons
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri - Columbia, Columbia, MO 65201, USA
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26
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Abstract
Newborn screening has evolved fast following recent advances in diagnosis and treatment of disease, particularly the development of multiplex testing and applications of molecular testing. Formal evidence of benefit from newborn screening has been largely lacking, due to the rarity of individual disorders. There are wide international differences in the choice of disorders screened, and ethical issues in both screening and not screening are apparent. More evidence is needed about benefit and harm of screening for specific disorders and renewed discussion about the basic aims of newborn screening must be undertaken.
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Affiliation(s)
- Bridget Wilcken
- The Children's Hospital at Westmead, The University of Sydney, Sydney, New South Wales, Australia
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27
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Groselj U, Tansek MZ, Battelino T. Fifty years of phenylketonuria newborn screening - A great success for many, but what about the rest? Mol Genet Metab 2014; 113:8-10. [PMID: 25174964 DOI: 10.1016/j.ymgme.2014.07.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 07/18/2014] [Accepted: 07/18/2014] [Indexed: 01/15/2023]
Abstract
Guthrie's landmark discovery and the subsequent implementation of the first newborn screening programs for phenylketonuria (PKU) and other inherited errors of metabolism (IEM) could be - in a 50 year retrospective - easily considered among the greatest advances in medicine. They have not just improved the quality of hundreds of thousands of lives, but also transformed our understanding and approach to PKU and IEM in general. However, according to the available albeit very scarce data, many countries and regions seem not to share the benefits of the last 50 years of development. Many of them have not yet introduced the newborn screening for PKU or face significant problems in its implementation. In addition, the issue seems to be underrated by the relevant professional forums. Action to improve the current situation should urgently be taken.
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Affiliation(s)
- Urh Groselj
- Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases, University Children's Hospital Ljubljana, Ljubljana, Slovenia
| | - Mojca Zerjav Tansek
- Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases, University Children's Hospital Ljubljana, Ljubljana, Slovenia
| | - Tadej Battelino
- Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases, University Children's Hospital Ljubljana, Ljubljana, Slovenia; Department of Pediatrics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
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