2019
Severity of reduced bone mineral density and risk of fractures in long‐term survivors of childhood leukemia and lymphoma undergoing guideline‐recommended surveillance for bone health
Bloomhardt HM, Sint K, Ross WL, Rotatori J, Ness K, Robinson C, Carpenter TO, Chow EJ, Kadan‐Lottick N. Severity of reduced bone mineral density and risk of fractures in long‐term survivors of childhood leukemia and lymphoma undergoing guideline‐recommended surveillance for bone health. Cancer 2019, 126: 202-210. PMID: 31536650, DOI: 10.1002/cncr.32512.Peer-Reviewed Original ResearchConceptsLow bone mineral densityReduced bone mineral densityBone mineral densityLymphoma survivorsMineral densityLumbar spine BMD Z-scoreChildhood leukemia/lymphomaPatient/treatment factorsSpine BMD Z-scoreDual-energy X-ray absorptiometryGuideline-recommended surveillanceBMD Z-scoresLong-term survivorsRisk of fractureCross-sectional studyLeukemia/lymphomaLong bone fracturesX-ray absorptiometrySurvivorship clinicBone healthMultivariable analysisMean ageChronic conditionsMedical recordsWhite raceContinued Beneficial Effects of Burosumab in Adults with X-Linked Hypophosphatemia: Results from a 24-Week Treatment Continuation Period After a 24-Week Double-Blind Placebo-Controlled Period
Portale AA, Carpenter TO, Brandi ML, Briot K, Cheong HI, Cohen-Solal M, Crowley R, Jan De Beur S, Eastell R, Imanishi Y, Imel EA, Ing S, Ito N, Javaid M, Kamenicky P, Keen R, Kubota T, Lachmann R, Perwad F, Pitukcheewanont P, Ralston SH, Takeuchi Y, Tanaka H, Weber TJ, Yoo HW, Zhang L, Theodore-Oklota C, Mealiffe M, San Martin J, Insogna K. Continued Beneficial Effects of Burosumab in Adults with X-Linked Hypophosphatemia: Results from a 24-Week Treatment Continuation Period After a 24-Week Double-Blind Placebo-Controlled Period. Calcified Tissue International 2019, 105: 271-284. PMID: 31165191, DOI: 10.1007/s00223-019-00568-3.Peer-Reviewed Original ResearchConceptsWeek 48Adverse eventsWeek 24Sustained improvementTreatment-related serious adverse eventsOpen-label treatment periodSafety of burosumabDouble-blind placeboFatal adverse eventsSerious adverse eventsSerum phosphorus levelsPatient-reported outcomesSerum phosphorus concentrationRenal phosphate wastingHuman monoclonal antibodyContinued beneficial effectsHealing of fracturesRare genetic disorderMusculoskeletal morbidityPhysical functionContinuation periodMusculoskeletal impairmentsPhosphate wastingTreatment periodBurosumab
2015
Conventional Therapy in Adults With X-Linked Hypophosphatemia: Effects on Enthesopathy and Dental Disease
Connor J, Olear EA, Insogna KL, Katz L, Baker S, Kaur R, Simpson CA, Sterpka J, Dubrow R, Zhang JH, Carpenter TO. Conventional Therapy in Adults With X-Linked Hypophosphatemia: Effects on Enthesopathy and Dental Disease. The Journal Of Clinical Endocrinology & Metabolism 2015, 100: 3625-3632. PMID: 26176801, PMCID: PMC4596038, DOI: 10.1210/jc.2015-2199.Peer-Reviewed Original ResearchConceptsSevere dental diseaseHospital research unitDental diseaseDisease severityXLH patientsMajor long-term morbidityActive vitamin D metaboliteAdult XLH patientsLong-term morbidityVitamin D metabolitesAdult lifeMultiple logistic regressionRadiographic skeletal surveySignificant predictorsProportion of adultsConventional therapyD metabolitesSkeletal surveyLower riskExposure variablesLogistic regressionDiseaseEnthesopathySkeletal deformitiesTreatment variablesProlonged Correction of Serum Phosphorus in Adults With X-Linked Hypophosphatemia Using Monthly Doses of KRN23
Imel EA, Zhang X, Ruppe MD, Weber TJ, Klausner MA, Ito T, Vergeire M, Humphrey JS, Glorieux FH, Portale AA, Insogna K, Peacock M, Carpenter TO. Prolonged Correction of Serum Phosphorus in Adults With X-Linked Hypophosphatemia Using Monthly Doses of KRN23. The Journal Of Clinical Endocrinology & Metabolism 2015, 100: 2565-2573. PMID: 25919461, PMCID: PMC4495171, DOI: 10.1210/jc.2015-1551.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedDose-Response Relationship, DrugDrug Administration ScheduleFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsGlomerular Filtration RateHumansImmunoglobulin GMaleMiddle AgedPhosphorusRecombinant ProteinsTreatment OutcomeYoung AdultConceptsTmP/GFRSerum PiNormal rangeOpen-label phase 1/2 studyElevated fibroblast growth factor 23Fibroblast growth factor 23Phase 1/2 studyDose-escalation studyGlomerular filtration ratePre-dose levelsGrowth factor 23Favorable safety profileMain outcome measuresProportion of subjectsAcademic medical centerPeak PiSerum inorganic phosphorusPg/mLUrinary calciumDose escalationFactor 23Monthly dosesSerum phosphorusDihydroxyvitamin DSafety profileAssociation between serum 25‐hydroxyvitamin D level and pulmonary exacerbations in cystic fibrosis
Vanstone MB, Egan ME, Zhang JH, Carpenter TO. Association between serum 25‐hydroxyvitamin D level and pulmonary exacerbations in cystic fibrosis. Pediatric Pulmonology 2015, 50: 441-446. PMID: 25657016, DOI: 10.1002/ppul.23161.Peer-Reviewed Original ResearchConceptsPulmonary function testsCystic fibrosisPulmonary exacerbationsPediatric patientsD levelsYale-New Haven HospitalPediatric CF patientsVitamin D sufficiencyRetrospective chart reviewVitamin D statusStrongest independent determinantCF care centersPatients ages 5Logistic regression analysisAnnual numberD sufficiencyD statusChart reviewClinic visitsLung functionPulmonary functionAntibiotic therapyFunction testsHospitalization ratesIndependent determinants
2014
Effect of Paricalcitol on Circulating Parathyroid Hormone in X-Linked Hypophosphatemia: A Randomized, Double-Blind, Placebo-Controlled Study
Carpenter TO, Olear EA, Zhang JH, Ellis BK, Simpson CA, Cheng D, Gundberg CM, Insogna KL. Effect of Paricalcitol on Circulating Parathyroid Hormone in X-Linked Hypophosphatemia: A Randomized, Double-Blind, Placebo-Controlled Study. The Journal Of Clinical Endocrinology & Metabolism 2014, 99: 3103-3111. PMID: 25029424, PMCID: PMC4154090, DOI: 10.1210/jc.2014-2017.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAlkaline PhosphataseBone Density Conservation AgentsChildDouble-Blind MethodErgocalciferolsFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsHumansHyperparathyroidismMaleMiddle AgedParathyroid HormonePhosphorusPlacebosProspective StudiesTreatment OutcomeVitamin DYoung AdultConceptsRenal phosphate thresholdGlomerular filtration rateBone scanSerum phosphorusFiltration rateXLH patientsEffect of paricalcitolUse of paricalcitolPlacebo-treated subjectsElevated PTH levelsSerum calcium levelsSuppression of PTHHospital research unitSerum alkaline phosphatase activityPTH levelsCreatinine levelsSecondary outcomesStandard therapyUrinary calciumPlacebo subjectsParathyroid hormoneSerum calciumAlkaline phosphatase activityD levelsSkeletal improvementRandomized trial of the anti-FGF23 antibody KRN23 in X-linked hypophosphatemia
Carpenter TO, Imel EA, Ruppe MD, Weber TJ, Klausner MA, Wooddell MM, Kawakami T, Ito T, Zhang X, Humphrey J, Insogna KL, Peacock M. Randomized trial of the anti-FGF23 antibody KRN23 in X-linked hypophosphatemia. Journal Of Clinical Investigation 2014, 124: 1587-1597. PMID: 24569459, PMCID: PMC3973088, DOI: 10.1172/jci72829.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedCalciumFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsGlomerular Filtration RateHalf-LifeHumansInjections, IntravenousInjections, SubcutaneousKidney TubulesMaleMiddle AgedPhosphatesVitamin DYoung AdultConceptsTmP/GFRSerum PiParathyroid hormonePhosphate reabsorptionXLH patientsRenal tubular thresholdSerum parathyroid hormoneFavorable safety profileElevated serum FGF23Renal phosphate reabsorptionLow serum concentrationsPhosphate-regulating endopeptidaseSerum Pi concentrationFGF23 antibodySerum FGF23Dihydroxyvitamin DSafety profileTubular thresholdSingle doseSerum concentrationsKRN23Mean t1/2Potential treatmentPatientsEffect duration
2009
Survey of the Enthesopathy of X-Linked Hypophosphatemia and Its Characterization in Hyp Mice
Liang G, Katz LD, Insogna KL, Carpenter TO, Macica CM. Survey of the Enthesopathy of X-Linked Hypophosphatemia and Its Characterization in Hyp Mice. Calcified Tissue International 2009, 85: 235-246. PMID: 19609735, PMCID: PMC2988401, DOI: 10.1007/s00223-009-9270-6.Peer-Reviewed Original ResearchMeSH KeywordsAchilles TendonAdolescentAdultAgedAnimalsBiomarkersCalcinosisChildDisease Models, AnimalDisease ProgressionFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsGenetic Diseases, X-LinkedHumansMiceMice, Inbred C57BLMiddle AgedPatellar LigamentPhenotypeQuadriceps MuscleRadiographyRheumatic DiseasesTendinopathyTendonsYoung AdultConceptsFGF-23Fibroblast growth factor receptor 3Hyp miceMajority of patientsHigh circulating levelsPhosphate-regulating hormoneBone spur formationTendon insertion siteGrowth factor receptor 3Insertion siteLigament insertion sitesCirculating LevelsPhosphate excretionBone-forming osteoblastsHeterotopic calcificationOsteophyte formationHistological examinationMurine modelReceptor 3Spur formationHypophosphatemiaEnthesis fibrocartilageBone mineralizationBiochemical milieuMice