2022
Long-term Burosumab Administration Is Safe and Effective in Adults With X-linked Hypophosphatemia
Weber TJ, Imel EA, Carpenter TO, Peacock M, Portale AA, Hetzer J, Merritt JL, Insogna K. Long-term Burosumab Administration Is Safe and Effective in Adults With X-linked Hypophosphatemia. The Journal Of Clinical Endocrinology & Metabolism 2022, 108: 155-165. PMID: 36072994, PMCID: PMC9759172, DOI: 10.1210/clinem/dgac518.Peer-Reviewed Original ResearchMeSH KeywordsAdultAntibodies, Monoclonal, HumanizedFamilial Hypophosphatemic RicketsGenetic Diseases, X-LinkedHumansPhosphatesConceptsSerum phosphate levelsPatient-reported outcomesNormal rangeBurosumab therapyTreatment optionsEffective long-term treatment optionLong-term extension studyLong-term treatment optionNew safety findingsBone turnover markersLong-term administrationPhosphate levelsRespective normal rangesProportion of subjectsLong-term safetyLast doseAdult patientsClinical responseSafety findingsTurnover markersSerum phosphateBone biomarkersStudy endWeek 12Burosumab treatmentEfficacy of Burosumab in Adults with X-linked Hypophosphatemia (XLH): A Post Hoc Subgroup Analysis of a Randomized Double-Blind Placebo-Controlled Phase 3 Study
Brandi ML, Jan de Beur S, Briot K, Carpenter T, Cheong HI, Cohen-Solal M, Crowley RK, Eastell R, Imanishi Y, Imel EA, Ing SW, Insogna K, Ito N, Javaid K, Kamenicky P, Keen R, Kubota T, Lachmann RH, Perwad F, Pitukcheewanont P, Portale A, Ralston SH, Tanaka H, Weber TJ, Yoo HW, Sun W, Williams A, Nixon A, Takeuchi Y. Efficacy of Burosumab in Adults with X-linked Hypophosphatemia (XLH): A Post Hoc Subgroup Analysis of a Randomized Double-Blind Placebo-Controlled Phase 3 Study. Calcified Tissue International 2022, 111: 409-418. PMID: 35927518, DOI: 10.1007/s00223-022-01006-7.Peer-Reviewed Original ResearchMeSH KeywordsAdultAntibodies, Monoclonal, HumanizedDouble-Blind MethodFamilial Hypophosphatemic RicketsHumansPainTreatment OutcomeConceptsPhase 3 studySubgroup analysisPhysical functionMean serum phosphate concentrationPost-hoc subgroup analysesAdditional efficacy endpointsPlacebo-controlled periodDouble-blind placeboSerum phosphate concentrationEfficacy endpointPain domainPain medicationTreatment armsSymptomatic adultsOpioid/Western OntarioBurosumabPlaceboTest distanceHypophosphatemiaRelevant subgroupsTotal scoreEndpointConfidence intervalsSubgroup variables
2021
Musculoskeletal Features in Adults With X-linked Hypophosphatemia: An Analysis of Clinical Trial and Survey Data
Javaid MK, Ward L, Pinedo-Villanueva R, Rylands AJ, Williams A, Insogna K, Imel EA. Musculoskeletal Features in Adults With X-linked Hypophosphatemia: An Analysis of Clinical Trial and Survey Data. The Journal Of Clinical Endocrinology & Metabolism 2021, 107: e1249-e1262. PMID: 34636401, PMCID: PMC8852215, DOI: 10.1210/clinem/dgab739.Peer-Reviewed Original ResearchConceptsMusculoskeletal featuresClinical trialsHistory of fractureClinical Trials GroupAge 20 yearsClinical trial subjectsProportion of adultsMusculoskeletal manifestationsPain subgroupsSpinal stenosisGroup of adultsOverall prevalenceTrial groupLow prevalenceAge bandsTrial subjectsOnline survey participantsAdultsAgeSurgeryHigh ratePrevalenceXLHTrialsSurvey participantsBurosumab treatment in adults with X-linked hypophosphataemia: 96-week patient-reported outcomes and ambulatory function from a randomised phase 3 trial and open-label extension
Briot K, Portale AA, Brandi ML, Carpenter TO, Cheong HI, Cohen-Solal M, Crowley RK, Eastell R, Imanishi Y, Ing S, Insogna K, Ito N, de Beur S, Javaid MK, Kamenicky P, Keen R, Kubota T, Lachmann RH, Perwad F, Pitukcheewanont P, Ralston SH, Takeuchi Y, Tanaka H, Weber TJ, Yoo HW, Nixon A, Nixon M, Sun W, Williams A, Imel EA. Burosumab treatment in adults with X-linked hypophosphataemia: 96-week patient-reported outcomes and ambulatory function from a randomised phase 3 trial and open-label extension. RMD Open 2021, 7: e001714. PMID: 34548383, PMCID: PMC8458321, DOI: 10.1136/rmdopen-2021-001714.Peer-Reviewed Original ResearchMeSH KeywordsAdultAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedFamilial Hypophosphatemic RicketsHumansPatient Reported Outcome MeasuresConceptsBrief Pain Inventory-Short FormPatient-reported outcomesBrief Fatigue InventoryBPI-SF scoresAmbulatory functionWeek 96Burosumab treatmentMcMaster Universities Osteoarthritis IndexOpen-label extensionDouble-blinded trialPhase 3 trialMin walk testSignificant improvementWOMAC stiffnessOsteoarthritis IndexWeek 48Worse fatigueWeek 24Walk testFatigue InventoryWestern OntarioBFI scoresSubstantial burdenWOMACBurosumab
2020
New Therapies for Hypophosphatemia-Related to FGF23 Excess
Athonvarangkul D, Insogna KL. New Therapies for Hypophosphatemia-Related to FGF23 Excess. Calcified Tissue International 2020, 108: 143-157. PMID: 32504139, DOI: 10.1007/s00223-020-00705-3.BooksMeSH KeywordsAdultAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedChildFamilial Hypophosphatemic RicketsFibroblast Growth Factor-23Fibroblast Growth FactorsHumansHypophosphatemiaOsteomalaciaPhosphatesConceptsTumor-induced osteomalaciaCutaneous skeletal hypophosphatemia syndromeEpidermal nevus syndromeAutosomal dominant hypophosphatemic ricketsAutosomal recessive hypophosphatemic ricketsHypophosphatemic ricketsForms of FGF23Treatment of XLHActive comparator trialsMainstay of therapyMonoclonal blocking antibodyNew treatment modalitiesMcCune-Albright syndromeRenal phosphate wastingRecessive hypophosphatemic ricketsDominant hypophosphatemic ricketsFGF23 excessComparator trialsSkeletal complicationsChronic hypophosphatemiaMusculoskeletal syndromeOngoing trialsClinical presentationTreatment modalitiesClinical trials
2019
Burosumab Improved Histomorphometric Measures of Osteomalacia in Adults with X‐Linked Hypophosphatemia: A Phase 3, Single‐Arm, International Trial
Insogna KL, Rauch F, Kamenický P, Ito N, Kubota T, Nakamura A, Zhang L, Mealiffe M, San Martin J, Portale AA. Burosumab Improved Histomorphometric Measures of Osteomalacia in Adults with X‐Linked Hypophosphatemia: A Phase 3, Single‐Arm, International Trial. Journal Of Bone And Mineral Research 2019, 34: 2183-2191. PMID: 31369697, PMCID: PMC6916280, DOI: 10.1002/jbmr.3843.Peer-Reviewed Original ResearchConceptsAdverse eventsWeek 48Fracture healingMore treatment-emergent adverse eventsTreatment-emergent adverse eventsProcedure-related adverse eventsOsteoid volume/bone volumeMost adverse eventsSerious adverse eventsTransiliac bone biopsiesSerum phosphorus concentrationPoor bone qualityRenal phosphate reabsorptionHuman monoclonal antibodyBone painPersistent osteomalaciaSubcutaneous burosumabPrimary endpointSkeletal complicationsAtraumatic fracturesChronic hypophosphatemiaSerum phosphorusDihydroxyvitamin DBone turnoverBone biopsyContinued 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 periodBurosumabClinical and genetic analysis in a large Chinese cohort of patients with X-linked hypophosphatemia
Zhang C, Zhao Z, Sun Y, Xu L, JiaJue R, Cui L, Pang Q, Jiang Y, Li M, Wang O, He X, He S, Nie M, Xing X, Meng X, Zhou X, Yan L, Kaplan JM, Insogna KL, Xia W. Clinical and genetic analysis in a large Chinese cohort of patients with X-linked hypophosphatemia. Bone 2019, 121: 212-220. PMID: 30682568, DOI: 10.1016/j.bone.2019.01.021.Peer-Reviewed Original ResearchAdolescentAdultChildChild, PreschoolChinaFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsGenetic Association StudiesHumansInfantMaleMiddle AgedMutationPHEX Phosphate Regulating Neutral EndopeptidasePoint MutationRetrospective StudiesSex CharacteristicsYoung Adult
2018
A Randomized, Double‐Blind, Placebo‐Controlled, Phase 3 Trial Evaluating the Efficacy of Burosumab, an Anti‐FGF23 Antibody, in Adults With X‐Linked Hypophosphatemia: Week 24 Primary Analysis
Insogna KL, Briot K, Imel EA, Kamenický P, Ruppe MD, Portale AA, Weber T, Pitukcheewanont P, Cheong HI, de Beur S, Imanishi Y, Ito N, Lachmann RH, Tanaka H, Perwad F, Zhang L, Chen C, Theodore‐Oklota C, Mealiffe M, San Martin J, Carpenter TO, Investigators O. A Randomized, Double‐Blind, Placebo‐Controlled, Phase 3 Trial Evaluating the Efficacy of Burosumab, an Anti‐FGF23 Antibody, in Adults With X‐Linked Hypophosphatemia: Week 24 Primary Analysis. Journal Of Bone And Mineral Research 2018, 33: 1383-1393. PMID: 29947083, DOI: 10.1002/jbmr.3475.Peer-Reviewed Original ResearchConceptsTreatment-related serious adverse eventsMean serum phosphate concentrationWOMAC physical function subscaleFibroblast growth factor 23Intact parathyroid hormoneSerious adverse eventsPhase 3 trialPhysical function subscaleChronic musculoskeletal painGrowth factor 23Serum phosphate concentrationRenal phosphate wastingHuman monoclonal antibodyLower limb deformitiesImportant medical needStiffness subscalePlacebo groupUrine calciumWorst painAdverse eventsWeek 24Dental abscessMusculoskeletal painFactor 23Function subscaleThree-Month Randomized Clinical Trial of Nasal Calcitonin in Adults with X-linked Hypophosphatemia
Sullivan R, Abraham A, Simpson C, Olear E, Carpenter T, Deng Y, Chen C, Insogna KL. Three-Month Randomized Clinical Trial of Nasal Calcitonin in Adults with X-linked Hypophosphatemia. Calcified Tissue International 2018, 102: 666-670. PMID: 29383408, PMCID: PMC5957766, DOI: 10.1007/s00223-017-0382-0.Peer-Reviewed Original ResearchMeSH KeywordsAdultCalcitoninFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsHumansMaleMiddle AgedPhosphatesPhosphorusTreatment OutcomeConceptsLevels of FGF23Nasal salmon calcitoninSalmon calcitoninStudy drugVisit 2Day 2Levels of PTHPrincipal outcome variableTmP/GFRSingle subcutaneous dosePlacebo nasal sprayNasal calcitoninSerum calciumSubcutaneous doseVisit 4Dihydroxyvitamin DSerum phosphorusVisit 3Final doseVisit 1Nasal sprayClinical trialsSerial measurementsDrug doseFGF23 production
2015
Pharmacokinetics and pharmacodynamics of a human monoclonal anti‐FGF23 antibody (KRN23) in the first multiple ascending‐dose trial treating adults with X‐linked hypophosphatemia
Zhang X, Imel EA, Ruppe MD, Weber TJ, Klausner MA, Ito T, Vergeire M, Humphrey J, Glorieux FH, Portale AA, Insogna K, Carpenter TO, Peacock M. Pharmacokinetics and pharmacodynamics of a human monoclonal anti‐FGF23 antibody (KRN23) in the first multiple ascending‐dose trial treating adults with X‐linked hypophosphatemia. The Journal Of Clinical Pharmacology 2015, 56: 176-185. PMID: 26073451, PMCID: PMC5042055, DOI: 10.1002/jcph.570.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedArea Under CurveBiomarkersBone and BonesFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23HumansMaleMiddle AgedPhosphorusYoung AdultConceptsConcentration-time curveSerum fibroblast growth factor 23Multiple ascending dose trialFibroblast growth factor 23Ascending dose trialHuman IgG1 monoclonal antibodyLow-normal serumRecombinant human IgG1 monoclonal antibodyDihydroxyvitamin D concentrationsGlomerular filtration rateGrowth factor 23Serum inorganic phosphorusSerum Pi concentrationIgG1 monoclonal antibodyFGF23 antibodyDose adjustmentFactor 23Serum PiFiltration ratePhosphate reabsorptionBone markersKRN23D concentrationsNormal serumMonoclonal antibodiesConventional 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 ResearchMeSH KeywordsAdultCalcitriolCross-Sectional StudiesFamilial Hypophosphatemic RicketsFemaleHumansMaleMiddle AgedPhosphatesRadiographyRheumatic DiseasesSeverity of Illness IndexStomatognathic DiseasesTreatment OutcomeYoung AdultConceptsSevere 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 profile
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
2011
A clinician's guide to X‐linked hypophosphatemia
Carpenter TO, Imel EA, Holm IA, de Beur S, Insogna KL. A clinician's guide to X‐linked hypophosphatemia. Journal Of Bone And Mineral Research 2011, 26: 1381-1388. PMID: 21538511, PMCID: PMC3157040, DOI: 10.1002/jbmr.340.BooksMeSH KeywordsFamilial Hypophosphatemic RicketsGenetic Diseases, X-LinkedHumansPractice Guidelines as TopicRadiographyConceptsTreatment guidelinesRenal phosphate wastingPathophysiologic featuresPrototypic disorderPhosphate wastingClinician's GuideMissed diagnosisSupport groupsConference recommendationsCommon formComplex disorderDearth of informationHypophosphatemiaDisordersGuidelinesPatientsScientific conferencesRicketsCliniciansDiseasePhysiciansDiagnosisWastingCalcitonin Administration in X-Linked Hypophosphatemia
Liu ES, Carpenter TO, Gundberg CM, Simpson CA, Insogna KL. Calcitonin Administration in X-Linked Hypophosphatemia. New England Journal Of Medicine 2011, 364: 1678-1680. PMID: 21524226, PMCID: PMC3162370, DOI: 10.1056/nejmc1010928.Peer-Reviewed Original ResearchMeSH KeywordsCalcitoninCase-Control StudiesDihydroxycholecalciferolsFamilial Hypophosphatemic RicketsFibroblast Growth Factor-23Fibroblast Growth FactorsGenetic Diseases, X-LinkedHumansPhosphorus
2010
Circulating Levels of Soluble Klotho and FGF23 in X-Linked Hypophosphatemia: Circadian Variance, Effects of Treatment, and Relationship to Parathyroid Status
Carpenter TO, Insogna KL, Zhang JH, Ellis B, Nieman S, Simpson C, Olear E, Gundberg CM. Circulating Levels of Soluble Klotho and FGF23 in X-Linked Hypophosphatemia: Circadian Variance, Effects of Treatment, and Relationship to Parathyroid Status. The Journal Of Clinical Endocrinology & Metabolism 2010, 95: e352-e357. PMID: 20685863, PMCID: PMC2968736, DOI: 10.1210/jc.2010-0589.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAge FactorsAgedBone Density Conservation AgentsCalcitriolChildCircadian RhythmEnzyme-Linked Immunosorbent AssayFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsGenetic Diseases, X-LinkedGlucuronidaseHumansKlotho ProteinsMaleMiddle AgedParathyroid HormonePhosphatesVitamin DConceptsSerum KlothoSerum FGF23Higher klotho levelsHospital research unitRenal phosphate handlingAcademic medical centerEffect of treatmentFibroblast growth factorKlotho levelsPTH secretionMedical therapySoluble KlothoDihydroxyvitamin DFGF23 regulationPhosphate handlingMedical CenterFGF23KlothoXLHCircadian variationGrowth factorPTHAdultsHypophosphatemiaTherapy
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