2015
Prolonged 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
Randomized 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
1998
Dietary protein affects intestinal calcium absorption 1 , 2 – 3
Kerstetter JE, O'Brien KO, Insogna KL. Dietary protein affects intestinal calcium absorption 1 , 2 – 3. American Journal Of Clinical Nutrition 1998, 68: 859-865. PMID: 9771863, DOI: 10.1093/ajcn/68.4.859.Peer-Reviewed Original ResearchMeSH KeywordsAdultAmino AcidsCalciumDietDietary CarbohydratesDietary FiberDietary ProteinsFemaleGlomerular Filtration RateHumansHyperparathyroidism, SecondaryIntestinal AbsorptionPhosphorusConceptsFractional calcium absorptionLow-protein dietUrinary calcium excretionCalcium absorptionDay 4Calcium excretionSecondary hyperparathyroidismDietary proteinDual-stable calcium isotopesGlomerular filtration rateIntestinal calcium absorptionHigh-protein dietCalcitropic hormonesCalcium metabolismAdditional womenFiltration rateIntestinal absorptionDay 5Young womenRandom orderDietHyperparathyroidismExperimental dietsDietary fiberExcretion
1994
Nocturnal hyperparathyroidism: a frequent feature of X-linked hypophosphatemia
Carpenter TO, Mitnick MA, Ellison A, Smith C, Insogna KL. Nocturnal hyperparathyroidism: a frequent feature of X-linked hypophosphatemia. The Journal Of Clinical Endocrinology & Metabolism 1994, 78: 1378-1383. PMID: 8200940, DOI: 10.1210/jcem.78.6.8200940.Peer-Reviewed Original ResearchConceptsHypophosphatemic ricketsFrequency of hyperparathyroidismMean iPTH valueNephrogenous cAMP excretionPathogenesis of nephrocalcinosisInitiation of therapyVitamin D preparationsGroup of patientsOnset of treatmentExaggerated secretionParathyroid statusIPTH valuesTertiary hyperparathyroidismParathyroid functionUntreated patientsOccasional complicationCAMP excretionHyperparathyroidismPhosphopenic ricketsD preparationsPatientsControl individualsRicketsIntact hormoneNocturnal rise
1986
Nephrogenous Cyclic AMP, Adenylate Cyclase-Stimulating Activity, and the Humoral Hypercalcemia of Malignancy
GODSALL JW, BURTIS WJ, INSOGNA KL, BROADUS AE, STEWART AF. Nephrogenous Cyclic AMP, Adenylate Cyclase-Stimulating Activity, and the Humoral Hypercalcemia of Malignancy. 1986, 42: 705-750. PMID: 3016837, DOI: 10.1016/b978-0-12-571142-5.50021-5.BooksConceptsNephrogenous cyclic AMPCyclase-stimulating activityUcAMP excretionHumoral hypercalcemiaLocal osteolytic hypercalcemiaAdenylate cyclase-stimulating activityBone-resorbing activityCyclic AMPHPT groupNcAMP excretionNormocalcemic patientsPathophysiologic syndromeTumor extractsAnimal modelsHypercalcemiaAnimal tumorsTumorsNcAMPHHMExcretionPatientsMalignancyObserved elevationBasic proteinAMP
1983
Impaired phosphorus conservation and 1,25 dihydroxyvitamin D generation during phosphorus deprivation in familial hypophosphatemic rickets.
Insogna KL, Broadus AE, Gertner JM. Impaired phosphorus conservation and 1,25 dihydroxyvitamin D generation during phosphorus deprivation in familial hypophosphatemic rickets. Journal Of Clinical Investigation 1983, 71: 1562-1569. PMID: 6306051, PMCID: PMC370362, DOI: 10.1172/jci110912.Peer-Reviewed Original ResearchMeSH KeywordsAbsorptionAdultCalcitriolCalciumCyclic AMPDietGlomerular Filtration RateHumansHypophosphatemia, FamilialKidney TubulesMaleParathyroid HormonePhosphorusRicketsConceptsFamilial hypophosphatemic ricketsNormal subjectsHypophosphatemic ricketsImmunoreactive parathyroid hormone levelsD plasma levelsNephrogenous cyclic AMPParathyroid hormone levelsGlomerular filtration rateDietary phosphorus deprivationHealthy male volunteersTubular reabsorptive capacityLow phosphorus dietCyclic AMP measurementsMale patientsRenal responseFiltration ratePlasma levelsHormone levelsAbnormal responseMale volunteersReabsorptive capacityPatientsPhosphorus intakePhosphorus dietPhosphate conservationEvidence for bidirectional net movement of creatinine in the rat kidney
Namnum P, Insogna K, Baggish D, Hayslett JP. Evidence for bidirectional net movement of creatinine in the rat kidney. American Journal Of Physiology 1983, 244: f719-f723. PMID: 6859263, DOI: 10.1152/ajprenal.1983.244.6.f719.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCreatinineGlomerular Filtration RateInulinKidneyKineticsMaleRatsRats, Inbred F344ConceptsGlomerular filtration rateCreatinine levelsConscious ratsPlasma creatinineFiltration ratePlasma creatinine levelsElevated plasma creatinineInulin clearance ratioIntravenous infusionEndogenous creatinineCreatinineAnesthetized animalsRenal tubulesNet secretionReliable markerRat kidneyRatsMetabolic studiesClearance ratioTest substancesCreatinine transportInfusion
1981
Effect of Age on Serum Immunoreactive Parathyroid Hormone and Its Biological Effects*
INSOGNA K, LEWIS A, LIPINSKI B, BRYANT C, BARAN D. Effect of Age on Serum Immunoreactive Parathyroid Hormone and Its Biological Effects*. The Journal Of Clinical Endocrinology & Metabolism 1981, 53: 1072-1075. PMID: 6270181, DOI: 10.1210/jcem-53-5-1072.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAgingCalciumCalcium, DietaryCreatinineCyclic AMPFemaleGlomerular Filtration RateHumansKidney TubulesMaleParathyroid HormonePhosphorusConceptsIPTH levelsElderly subjectsTubular maximum phosphate reabsorptionImmunoreactive parathyroid hormone levelsSerum immunoreactive parathyroid hormoneImmunoreactive parathyroid hormoneParathyroid hormone levelsBiological effectsCreatinine clearanceEffect of ageNephrogenous cAMPUrinary calciumCreatinine ratioSerum phosphateParathyroid hormoneBone lossCalcium ingestionBone resorptionPhosphate reabsorptionHormone levelsHealthy volunteersSignificant negative correlationSignificant positive correlationIPTHOlder volunteers