2021
Variable Clinical Presentation of Children with Hereditary Hypophosphatemic Rickets with Hypercalciuria: A Case Series and Review of the Literature
Christensen S, Tebben P, Sas D, Creo A. Variable Clinical Presentation of Children with Hereditary Hypophosphatemic Rickets with Hypercalciuria: A Case Series and Review of the Literature. Hormone Research In Paediatrics 2021, 94: 374-389. PMID: 34666334, DOI: 10.1159/000520299.Peer-Reviewed Original ResearchConceptsHereditary hypophosphatemic ricketsRenal symptomsPhosphate wastingHypophosphatemic ricketsVariable clinical presentationRenal phosphate wastingPhenotype-genotype correlationSLC34A3 mutationsUrine phosphateBone symptomsCase seriesMineralization defectRare conditionSLC34A3 variantsSerum phosphorusHHRHAccurate diagnosisUrinary stonesPatientsCombined boneHypercalciuriaLiterature reviewSymptomsSLC34A3Systematic literature review
2017
Bone Structural Characteristics and Response to Bisphosphonate Treatment in Children With Hajdu-Cheney Syndrome
Sakka S, Gafni R, Davies J, Clarke B, Tebben P, Samuels M, Saraff V, Klaushofer K, Fratzl-Zelman N, Roschger P, Rauch F, Högler W. Bone Structural Characteristics and Response to Bisphosphonate Treatment in Children With Hajdu-Cheney Syndrome. The Journal Of Clinical Endocrinology & Metabolism 2017, 102: 4163-4172. PMID: 28938420, PMCID: PMC5673271, DOI: 10.1210/jc.2017-01102.Peer-Reviewed Original ResearchConceptsHajdu-Cheney syndromeIncreased bone resorptionBP therapyNOTCH2 mutationsLumbar spine bone mineral densityBone resorptionIncreased heterogeneity of mineralizationResponse to bisphosphonate treatmentLumbar spine bone densitySpine bone mineral densityDual-energy X-ray absorptiometryTransiliac bone biopsy specimensQuantitative computed tomography resultsBone histomorphometric characteristicsSpine bone densityPeripheral quantitative computed tomography resultsCortical thicknessResponse to bisphosphonatesX-ray absorptiometryBone mineral densityPeripheral quantitative computed tomographyBone biopsy specimensResponse to BPComputed tomography resultsQuantitative computed tomography
2016
Vitamin D-Mediated Hypercalcemia: Mechanisms, Diagnosis, and Treatment
Tebben P, Singh R, Kumar R. Vitamin D-Mediated Hypercalcemia: Mechanisms, Diagnosis, and Treatment. Endocrine Reviews 2016, 37: 521-547. PMID: 27588937, PMCID: PMC5045493, DOI: 10.1210/er.2016-1070.Peer-Reviewed Original ResearchConceptsVitamin D receptorD receptorVitamin D-mediated hypercalcemiaElevated serum calcium concentrationsAssociated with elevated serumProduction of 1,25-dihydroxyvitamin DSuppressing PTH concentrationsAssociated with malignancyReduced bone densityRenal stone formersSerum calcium concentrationVitamin D metabolitesVitamin D<sub>3</sub>Primary hyperparathyroidismElevated serumPTH concentrationsMonoallelic mutationsClinical featuresCYP24A1 geneD metabolitesGranulomatous diseaseBiochemical diagnosisTumor cellsVitamin DHypercalcemiaClinical and biochemical phenotypes of adults with monoallelic and biallelic CYP24A1 mutations: evidence of gene dose effect
O’Keeffe D, Tebben P, Kumar R, Singh R, Wu Y, Wermers R. Clinical and biochemical phenotypes of adults with monoallelic and biallelic CYP24A1 mutations: evidence of gene dose effect. Osteoporosis International 2016, 27: 3121-3125. PMID: 27129455, DOI: 10.1007/s00198-016-3615-6.Peer-Reviewed Original ResearchConceptsMonoallelic mutationsGene dose effectCYP24A1 mutationsCYP24A1 geneBiallelic mutationsBiochemical phenotypeDisease manifestationsElevated serum 1,25(OH)2DBone turnover markersMutations of CYP24A1Dose effectCompound heterozygous mutationsVitamin D metabolitesLow PTH concentrationsSerum 1,25(OH)2DUrine calciumResultsThe probandTurnover markersUrinary calciumHeterozygous mutationsPTH concentrationsD metabolitesSequence informationIntroductionThe objectiveMedical history
2012
Hypercalcemia, Hypercalciuria, and Elevated Calcitriol Concentrations with Autosomal Dominant Transmission Due to CYP24A1 Mutations: Effects of Ketoconazole Therapy
Tebben P, Milliner D, Horst R, Harris P, Singh R, Wu Y, Foreman J, Chelminski P, Kumar R. Hypercalcemia, Hypercalciuria, and Elevated Calcitriol Concentrations with Autosomal Dominant Transmission Due to CYP24A1 Mutations: Effects of Ketoconazole Therapy. The Journal Of Clinical Endocrinology & Metabolism 2012, 97: e423-e427. PMID: 22337913, PMCID: PMC3319216, DOI: 10.1210/jc.2011-1935.Peer-Reviewed Original ResearchConceptsSplice junction mutationElevated serum 1,25-dihydroxyvitamin DSerum 1,25-dihydroxyvitamin DAutosomal dominant transmissionCYP24A1 geneIntermittent hypercalcemiaUrinary calciumAnalysis of family membersDominant transmissionNormal rangeD concentrationsElevated 1,25-dihydroxyvitamin DReduced bone mineral densitySerum 24,25-dihydroxyvitamin DCYP24A1 gene mutationsElevated urinary calciumReduced urinary calciumBone mineral densityGenetic analysisGenetic basisElevated 1,25-dihydroxyvitamin D concentrationsStatistically significant reductionDecreased PTH concentrationsFamily membersGenes