hrp0084p2-228 | Bone | ESPE2015

Online Survey to Characterise the Burden of Illness in Children with X-Linked Hypophosphatemia

Linglart Agnes , Dvorak-Ewell Melita , Marshall Ayla , Martin Javier San , Skrinar Alison

Background: X-linked Hypophosphatemia (XLH), the most common heritable form of rickets, is a disorder of renal phosphate wasting caused by high circulating levels of fibroblast growth factor 23 (FGF23) that impairs normal phosphate reabsorption in the kidney and production of the active form of vitamin D. Affected children present with hypophosphatemia resulting in rickets, bowing of the legs and short stature. Limited information is available about the disease burden in child...

hrp0089fc2.1 | Bone, Growth Plate & Mineral Metabolism 1 | ESPE2018

Burosumab, a Fully Human anti-FGF23 Monoclonal Antibody, for X-linked Hypophosphatemia (XLH): Sustained Improvement in two Phase 2 Trials in Affected Children 1–12 years old

Linglart Agnes , van't Hoff William , Whyte Michael P. , Imel Erik , Portale Anthony A. , Boot Annemieke , Hogler Wolfgang , Padidela Raja , Mao Meng , Skrinar Alison , Martin Javier San , Carpenter Thomas O.

In XLH, excess fibroblast growth factor 23 (FGF23) causes hypophosphatemia and consequent rickets, skeletal deformities, and growth impairment. The efficacy and safety of burosumab, a fully human monoclonal antibody against FGF23, was evaluated in two Phase 2 trials in children with XLH. In CL201, 52 children with XLH (5–12 years old, Tanner ≤2) were randomized 1:1 to receive subcutaneous burosumab every 2 (Q2W) or 4 (Q4W) weeks, with doses titrated up to 2 mg/kg to...

hrp0089fc10.1 | Late Breaking | ESPE2018

Burosumab Improved Rickets, Phosphate Metabolism, and Clinical Outcomes Compared to Conventional Therapy in Children with X-Linked Hypophosphatemia (XLH) – A Randomized Controlled Phase 3 Study

Nilsson Ola , Whyte Michael P. , Imel Erik A. , Munns Craig , Portale Anthony A. , Ward Leanne , Simmons Jill H. , Padidela Raja , Namba Noriyuki , Cheong Hae Il , Mao Meng , Skrinar Alison , Chen Chao-Yin , Martin Javier San , Glorieux Francis

In children with XLH, high circulating levels of FGF23 cause hypophosphatemia with consequent rickets, skeletal deformities, and growth impairment. Conventional therapy consists of multiple daily doses of oral phosphate and active vitamin D (Pi/D). Burosumab is a fully human monoclonal antibody against FGF23 indicated for the treatment of XLH. In the active-control study CL301 (NCT02915705), 61 children with XLH (1–12 years old) were randomized (1:1) to receive subcutaneo...

hrp0086fc2.6 | Bone & Mineral Metabolism | ESPE2016

Effect of KRN23, a Fully Human Anti-FGF23 Monoclonal Antibody, on Rickets in Children with X-linked Hypophosphatemia (XLH): 40-week Interim Results from a Randomized, Open-label Phase 2 Study

Linglart Agnes , Carpenter Thomas , Imel Erik , Boot Annemieke , Hogler Wolfgang , Padidela Raja , van't Hoff William , Whyte Michael , Chen Chao-Yin , Skrinar Alison , Agarwal Sunil , Martin Javier San , Portale Anthony

Background: In XLH, high circulating FGF23 causes hypophosphatemia, rickets, and short stature.Objective and hypotheses: To evaluate KRN23 effects on serum phosphate (Pi) level and rickets severity in XLH children in a Phase 2 study.Method: 52 XLH children (ages 5–12 years, ≤Tanner 2) received KRN23 subcutaneously biweekly (Q2W) or monthly (Q4W). Serum Pi was measured at 2-week intervals. KRN23 dose was titrated (maximum...

hrp0086p2-p769 | Pituitary and Neuroendocrinology P2 | ESPE2016

Novel Uses of Psychiatric Drugs to Treat Hypothalamic Obesity

Julian Maria Cristina Azcona San , Gomez-Cardenas Francisco Javier Aguilar , Falconi Jose Luis Leon , Elicegui Amaia Ochotorena , de las Heras Ana Navedo , Lamban Ana Catalan , Martin Patricia Sierrasesumaga , de Almiron Monica Prados Ruiz , Martin Eduardo Arnaus

Background: Hypothalamic obesity (HyOb) is a disease characterized by weight gain resistant to lifestyle changes and dietary restriction. The main clinical findings are hyperfagia and decline of satiety, high levels of insulin and an increase of adipogenesis. The major problem for these patients is that conventional treatments, either medical or surgical are not succesful and have variable results.Objective and hypotheses: We aim to describe the natural ...

hrp0092fc2.1 | Bone, Growth Plate and Mineral Metabolism Session 1 | ESPE2019

Continued Improvement in Clinical Outcomes with Burosumab, a Fully Human Anti-FGF23 Monoclonal Antibody: Results from a 3-Year, Phase 2, Clinical Trial in Children with X-Linked Hypophosphatemia (XLH)

Linglart Agnès , Carpenter Thomas O. , Högler Wolfgang , Imel Erik A. , Portale Anthony A. , Boot Annemieke , Padidela Raja , Van't Hoff William , Mao Meng , Skrinar Alison , Scott Roberts Mary , San Martin Javier , Whyte Michael P.

In children with XLH, excess FGF23 causes hypophosphatemia with consequent rickets, skeletal deformities, and impaired growth and mobility. We previously reported that burosumab improved phosphate homeostasis and rickets in children with XLH. Here, we report final data from this Phase 2 Study CL201 (NCT02163577).Fifty-two children with XLH (5-12 years old, Tanner ≤ 2) were randomized 1:1 to receive subcutaneous burosumab every 2 (Q2W) or 4 (Q4W) we...

hrp0092fc2.2 | Bone, Growth Plate and Mineral Metabolism Session 1 | ESPE2019

Benefits of Long-Term Burosumab Persist in 11 Girls with X-Linked Hypophosphatemia (XLH) Who Transitioned into Adolescence During the Phase 2 CL201 Trial

Boot Annemieke , Carpenter Thomas O. , Högler Wolfgang , Imel Erik A. , Portale Anthony A. , Linglart Agnès , Padidela Raja , Van't Hoff William , Mao Meng , Skrinar Alison , Scott Roberts Mary , San Martin Javier , Whyte Michael P.

In children with XLH, excess FGF23 causes hypophosphatemia with consequent rickets, skeletal deformities, and impaired growth and mobility. We reported that burosumab improved phosphate homeostasis and rickets in children with XLH. Here, we present data on 11/52 subjects (all girls) who developed fused growth plates during the phase 2 study CL201 (NCT02163577).In CL201, 52 subjects (Baseline: 5-12 years-old, Tanner ≤ 2) were randomized 1:1 to recei...

hrp0092rfc2.1 | Bone, Growth Plate and Mineral Metabolism Session 1 | ESPE2019

Burosumab Resulted in Better Clinical Outcomes Than Continuation with Conventional Therapy in Both Younger (1-4 Years-Old) and Older (5-12 Years-Old) Children with X-Linked Hypophosphatemia

Högler Wolfgang , Imel Erik A. , Whyte Michael P. , Munns Craig , Portale Anthony A. , Ward Leanne , Nilsson Ola , Simmons Jill H. , Padidela Raja , Namba Noriyuki , Cheong Hae Il , Mao Meng , Skrinar Alison , San Martin Javier , Glorieux Francis

In children with X-linked hypophosphatemia (XLH), excess circulating fibroblast growth factor 23 (FGF23) causes hypophosphatemia with consequent rickets, skeletal deformities, and impairments in growth and mobility. Compared to continuation with conventional therapy (oral phosphate and active vitamin D [Pi/D]), switching to treatment with burosumab, a fully human monoclonal antibody against FGF23, showed significantly greater improvement in phosphate homeostasis, rickets sever...

hrp0082p3-d3-652 | Autoimmune Endocrine Disease | ESPE2014

Preservation of Ovarian Function in Young Females Cancer Survivors with Risk of Ovarian Failure

Chueca Maria , Berrade Sara , Miguel Isabel San , Oyarzabal Mirentxu , de Ilurdoz Maria Sagaseta , Dura Teodoro , Molina Javier

Background: Ovarian function in young females with cancer can be damaged due to chemo-radiotherapy. One option to preserve fertility in these patients is the cryopreservation of ovarian tissue, but this is still experimental.Objective and hypotheses: Evaluate our experience with cryopreservation (indications, complications, and reimplantation). Through surveys, understand patient perspectives.Method: A total of 63 women were diagno...

hrp0086p1-p227 | Diabetes P1 | ESPE2016

Rising of Type 1 Diabetes Mellitus Incidence in Chilean Children Between 2006 and 2014

Garfias Carolina , Garcia Hernan , Ugarte Francisca , Martin Yonathan San , Bortzuski Arturo , Cerda Jaime

Background: T1DM incidence in children varies across regions and countries, showing a continue rise Worldwide.Objective and hypotheses: To determine the incidence of T1D in Chilean children under 20 years between 2006 and 2012.Method: We reviewed mandatory notifications of T1D (GES Program) in Chile’s public health system in population younger than 20 years between 2006 and 2014. Data were obtained from the Department of Infor...