Importance of Growth Factors and Bone Maturation Ratio in the Response to Growth Hormone Therapy.

OBJECTIVE: The aim was to identify the influence of insulin-like growth factor I (IGF-1), IGF-binding protein-3 (IGFBP-3), and bone age (BA)/chronological age (CA) ratio on the response to GH therapy after 1 and 2 years of treatment and upon reaching final height. METHODS: Longitudinal, retrospective, observational study of 139 patients treated for idiopathic growth hormone deficiency. Variables examined during follow-up: (1) genetic background; (2) perinatal history; (3) anthropometry; (4) height velocity, BA, BA/CA and height prognosis; (5) analytical results (IGF-1, IGFBP-3). Final response variables: adult height (AH), AH with respect to target height, AH with respect to initial height prognosis, AH with respect to height at the start of treatment, and AH with respect to height at onset of puberty. RESULTS: Lower pretreatment IGF-1 levels and a greater increase in IGF-1 at the end of treatment imply a better response (r = -0.405, P = .007 and r = 0.274, P = .014, respectively), as does a greater increase in IGFBP-3 after 2 years of treatment and at the end of treatment (r = 0.207, P = .035 and r = 0.259, P = .020, respectively). A lower BA/CA ratio pretreatment and at the onset of puberty results in a better response (r = -0.502, P = .000 and r = -0.548, P = .000, respectively), as does a lower increase in BA and BA/CA ratio after the 1 and 2 years of treatment (r = -0.337, P = .000 and r = -0.332, P = .000, respectively). CONCLUSION: Low pretreatment IGF-1, a greater BA delay with respect to CA pretreatment and at the onset of puberty, a greater increase in IGFBP-3 after 2 years of treatment, and a lower increase in BA and BA/CA ratio after 1 and 2 years of treatment imply a better long-term response.

Response to growth hormone treatment in patients with sufficient secretion.

BACKGROUND: There are situations of short stature, with a normal stimulus test for GH, but decreased nocturnal secretion in which there could be a benefit with GH treatment. OBJETIVES: To assess adult height and height gain in patients with neurosecretory dysfunction diagnosis treated with growth hormone. MATERIAL Y METHODS: Longitudinal, retrospective and observational study including 61 patients treated with growth hormone after diagnosis of neurosecretory dysfunction who have already reached adult height. Variables such as adult height gain, growth rate, growth prognosis variation and IGF-I and IGFBP-3 were evaluated. Variables related to a good response in the first year have also been calculated, using the Index of responsiveness (IoR). RESULTS: GH treatment produces an improvement in growth rate and height, observing an increase in adult height with respect to initial height of 1.15±0.60 SD, height with respect to genetic height of -0.015±0.62 SD and adult height with respect to the initial growth prognosis 0,74±1,13 DE. The IoR in the first year is associated with a greater increase in height in the first year (p=0.000), with a greater adult height (p=0.000) and with a greater gain in adult height compared to its initial height (p=0.039). CONCLUSIONS: Patients with growth delay due to neurosecretory dysfunction of GH show a good response to treatment with rhGH, observing a significant height gain in their genetic size and improving their initial growth prognosis.

[Allan-Herndon-Dudley syndrome: a diagnosis to rule out in any male infant with undiagnosed hypotonia]. / Síndrome de Allan-Herndon-Dudley: un diagnóstico a descartar ante todo lactante varón con hipotonía sin causa determinada.

Allan-Herndon-Dudley syndrome is a rare X-linked genetic disorder, caused by a deficiency of the monocarboxylate transporter 8 (MCT8), a specific transporter of thyroid hormones, with functions mainly at the brain level. The syndrome produces an early onset of severe neurological disorder, in which hypotonia predominates. OBJECTIVE: To present a rare case with an unexpected diagnosis, highlighting the usefulness of requesting a complete thyroid profile in every hypotonic male infant without a specific cause. CLINICAL CASE: A 10-month-old male infant with severe axial and peripheral hypotonia, global weakness with little spontaneous mobility, without head support or stable sitting. Complete metabolic and peripheral neurophysiological studies were performed. Genetic studies for spinal muscular atrophy, Prader Willi syndrome, and myotonic dystrophy were also performed. The trio exome analysis detected a probably pathogenic variant c.359C>T;p.(Ser120Phe), hemizygous in exon 1 of the SLC16A2 gene, inherited from the mother. Thyroid abnormalities as increased free triiodothyronine (T3) and thyroid-stimulating hormone (TSH), and delayed myelination were ob served. CONCLUSIONS: MCT8 deficiency should be considered in the case of the male infant with unex plained hypotonia and weakness without a determined cause. The diagnosis is guided by a thyroid profile including free T3 hormone, because it presents a characteristic thyroid profile with decreased free thyroxine (T4), increased free T3, and normal or slightly elevated TSH levels. In this case, the implementation of the trio exome analysis allows establishing an early certain diagnosis.

Automated growth monitoring app (GROWIN): a mobile Health (mHealth) tool to improve the diagnosis and early management of growth and nutritional disorders in childhood.

OBJECTIVE: To assess the functionality and feasibility of the GROWIN app for promoting early detection of growth disorders in childhood, supporting early interventions, and improving children's lifestyle by analyzing data collected over 3 years (2018-2020). METHODS: We retrospectively assessed the growth parameters (height, weight, body mass index [BMI], abdominal circumference) entered by users (caregivers/parents) in the GROWIN app. We also analyzed the potential health problems detected and the messages/recommendations the app showed. Finally, we assessed the possible impact/benefit of the app on the growth of the children. RESULTS: A total of 21 633 users (Spanish [65%], Latin American [30%], and others [5%]) entered 10.5 ± 8.3 measurements (0-15 y old). 1200 recommendations were for low height and 550 for low weight. 1250 improved their measurements. A specialist review was recommended in 500 patients due to low height. 2567 nutrition tests were run. All children with obesity (n = 855, BMI: 27.8 kg/m2 [2.25 SD]) completed the initial test with a follow-up of ≥1 year. Initial results (score: 8.1) showed poor eating habits (fast food, commercially baked goods, candy, etc.), with >90% not having breakfast. After 3-6 months, BMI decreased ≥1 point, and test scores increased ≥2 points. This benefit was maintained beyond 1 year and was correlated with an improvement in BMI (r = -.65, P = .01). DISCUSSION/CONCLUSIONS: The GROWIN app represents an innovative automated solution for families to monitor growth. It allows the early detection of abnormal growth indicators during childhood and adolescence, promoting early interventions. Additionally, in children with obesity, an improvement in healthy nutritional habits and a decrease in BMI were observed.

Perinatal factors influence on the neurocognitive development of children born small for gestational age (SGA) during the first 2 years of life.

BACKGROUND AND OBJECTIVE: Children born small for gestational age (SGA) show higher risk of neurodevelopmental and cognitive abnormalities. The objective of this study is to determine in children born SGA the neurodevelopment during the first 2 years of life and to establish the influence of anthropometric data, gestational age, multiple gestation and perinatal factors. PATIENTS AND METHOD: Observational, prospective, descriptive and analytical study of the neurocognitive assessment performed, with Brunet-Lézine test, on SGA children (n = 91) from 3 to 24 months of age, comparing with own controls. RESULTS: Ninety-one SGA children, 47% girls, 83.5% single pregnancies; mean gestational age 37.7 weeks (standard deviation (SD) 2.1). Weight at birth 2053 g (SD 433.1), length 43.9 cm (SD 2.6) and head circumference 31.7 cm (SD 1.7). The SGA population shows significantly lower neurodevelopment than the control population, with a tendency to improve during the first 2 years of life. There are no differences by sex. SGA children born to multiple gestations have lower neurodevelopment only during the first year of life. There is a direct and positive correlation between weight, length and head circumference with neurocognitive development at 6, 9, 12 and 18 months. Gestational age correlated with better neurodevelopment at 3 and 6 months. CONCLUSIONS: Children born SGA present lower neurodevelopment than the control population. A greater impact on weight, length, and head circumference at birth is correlated with poorer neurocognitive development. Multiparity does not show significant influence on neurodevelopment evolution.

Growth hormone deficit: Influence of puberty on the response to treatment.

INTRODUCTION: Short stature is the most frequent reason for consultation in Pediatric Endocrinology consultations and sometimes requires treatment with growth hormone. The aim of the study was to analyze the response to treatment based on its onset in pubertal or prepubertal stages and to analyze the possible benefit of an early onset. PATIENTS AND METHODS: Longitudinal, retrospective and observational study in 139 patients treated for idiopathic growth hormone deficiency up to adult height. MAIN VARIABLES STUDIED: (a) genetic background: maternal, paternal and genetic height; (b) perinatal history; (c) anthropometry during follow-up and at pubertal onset: weight, height, body mass index; (d) variables during follow-up and at pubertal onset: growth rate, bone age and growth prognosis. Final response variables: adult height, adult height with respect to target height, adult height with respect to initial growth prediction, adult height with respect to initial height at the start of treatment and adult height with respect to height at pubertal onset. RESULTS: Total pubertal gain was 0.84 ± 0.6 SD. 61.9% of the patients started treatment with rhGH in prepuberty. The initiation of treatment in the prepubertal stage and a higher total pubertal gain are correlated with a better final height (P = 0.001 and r = 0.507, P = 0.00, respectively). Furthermore, a longer duration of treatment in pre-puberty is correlated with a better final response (r = 0.328, P = 0.00). CONCLUSIONS: The start of treatment in the prepubertal stage and its longer duration during this period are determining factors to achieve a good long-term response. Total pubertal gain was greater in patients who started treatment in the pubertal stage.

Déficit de hormona de crecimiento: influencia de la pubertad en la respuesta al tratamiento / Growth hormone deficit: Influence of puberty on the response to treatment

Introducción: La talla baja es motivo de consulta frecuente en Endocrinología Pediátrica, precisando en ocasiones tratamiento con hormona del crecimiento (GH). El objetivo del estudio fue analizar la respuesta al tratamiento en función de su inicio en la etapa puberal o prepuberal y analizar el posible beneficio de un comienzo precoz. Pacientes y métodos: Estudio longitudinal, retrospectivo y observacional en 139 pacientes tratados por déficit de GH idiopático (grave o parcial) hasta talla adulta. Principales variables estudiadas: a) antecedentes familiares: talla materna, paterna y genética; b) antecedentes perinatales; c) antropometría durante el seguimiento y al inicio puberal: peso, talla, índice de masa corporal, y d) variables durante el seguimiento y al inicio puberal: velocidad de crecimiento, edad ósea y pronóstico de crecimiento. Variables de respuesta final: talla adulta, talla adulta respecto a talla genética, talla adulta respecto al pronóstico de crecimiento inicial, talla adulta respecto a talla al inicio del tratamiento y talla adulta respecto a talla al inicio puberal. Resultados: La ganancia puberal total fue de 0,84±0,6 DE. Un 61,9% de los pacientes iniciaron tratamiento con GH en prepubertad. El inicio del tratamiento en la etapa prepuberal y una mayor ganancia puberal total se relacionaron con una mejor talla final (p=0,001, y r=0,507, p=0,00 respectivamente). Además, una mayor duración del tratamiento en la prepubertad se correlacionó con una mejor respuesta final (r=0,328, p=0,00). Conclusiones: El inicio del tratamiento en la prepubertad y una mayor duración durante este periodo son factores determinantes para alcanzar una mejor respuesta a largo plazo. La ganancia puberal total fue mayor en los pacientes que iniciaron el tratamiento en etapa puberal. (AU)

Introduction: Short stature is the most frequent reason for consultation in Pediatric Endocrinology consultations and sometimes requires treatment with growth hormone. The aim of the study was to analyze the response to treatment based on its onset in pubertal or prepubertal stages and to analyze the possible benefit of an early onset. Patients and methods: Longitudinal, retrospective and observational study in 139 patients treated for idiopathic growth hormone deficiency up to adult height. Main variables studied: (a) genetic background: maternal, paternal and genetic height; (b) perinatal history; (c) anthropometry during follow-up and at pubertal onset: weight, height, body mass index; (d) variables during follow-up and at pubertal onset: growth rate, bone age and growth prognosis. Final response variables: adult height, adult height with respect to target height, adult height with respect to initial growth prediction, adult height with respect to initial height at the start of treatment and adult height with respect to height at pubertal onset. Results: Total pubertal gain was 0.84±0.6 SD. 61.9% of the patients started treatment with rhGH in prepuberty. The initiation of treatment in the prepubertal stage and a higher total pubertal gain are correlated with a better final height (P=.001 and r=0.507, P=.00, respectively). Furthermore, a longer duration of treatment in pre-puberty is correlated with a better final response (r=0.328, P=.00). Conclusions: The start of treatment in the prepubertal stage and its longer duration during this period are determining factors to achieve a good long-term response. Total pubertal gain was greater in patients who started treatment in the pubertal stage. (AU)

Growth hormone deficit. Does the first year of treatment influence adult height?

INTRODUCTION: Short stature is the most frequent reason for Pediatric Endocrinology consultations and sometimes requires treatment with growth hormone. OBJECTIVE: The possible correlation of a good response to any early response factor with a better final response was studied, and also whether there was a difference in response to treatment according to the type of deficit. PATIENTS AND METHODS: This was a longitudinal, retrospective and observational study of 139 patients treated for idiopathic growth hormone deficiency up to adult height. There were good response criteria in the first year of treatment: a) an increase in growth rate ≥3 cm/year, b) a growth rate ≥1 standard deviation (SD), c) an increase in height ≥0.5 SD, d) an increase in height ≥0.3 SD. Study of the Index of Responsiveness to treatment in the first and second year. Final response variables: adult height with respect to target height, adult height with respect to initial growth prediction and adult height with respect to initial height at the start of treatment. The possible correlation of a good response to any of the early response factors with a better final response to treatment was studied, and also whether there was a difference in the response to treatment according to the type of deficit. RESULTS: The treatment produced a gain in adult height with respect to genetic height of 0.06 ±â€¯0.7 SD. Patients considered good responders in the first year of treatment presented a better final response (growth rate ≥3 cm: p = 0.000, growth rate ≥1 SD: p = 0.008, height gain ≥0.5 SD: p = 0.007, height gain ≥0.3 SD: p = 0.006), as well as patients with a severe deficit (p = 0.04). The index of responsiveness to treatment during the first year was associated with a better final response (r = 0.249, p = 0.003), with this correlation being maintained in the second year (r = 0.294, p = 0.01). CONCLUSIONS: Growth hormone treatment increased height in the genetic target. The percentage of good responders varied depending on the criteria used. The response in the first year of treatment and a severe deficit were determining factors for achieving a good long-term response.

Perinatal factors influence on the neurocognitive development of children born small for gestational age (SGA) during the first 2 years of life. / Influencia de factores perinatales en el desarrollo neurocognitivo de niños nacidos pequeños para la edad gestacional durante los primeros 2 años de vida.

BACKGROUND AND OBJECTIVE: Children born small for gestational age (SGA) show higher risk of neurodevelopmental and cognitive abnormalities. The objective of this study is to determine in children born SGA the neurodevelopment during the first 2 years of life and to establish the influence of anthropometric data, gestational age, multiple gestation and perinatal factors. PATIENTS AND METHOD: Observational, prospective, descriptive and analytical study of the neurocognitive assessment performed, with Brunet-Lézine test, on SGA children (n=91) from 3 to 24 months of age, comparing with own controls. RESULTS: Ninety-one SGA children, 47% girls, 83.5% single pregnancies; mean gestational age 37.7 weeks (standard deviation [SD] 2.1). Weight at birth 2,053g (SD 433.1), length 43.9cm (SD 2.6) and head circumference 31.7cm (SD 1.7). The SGA population shows significantly lower neurodevelopment than the control population, with a tendency to improve during the first 2 years of life. There are no differences by sex. SGA children born to multiple gestations have lower neurodevelopment only during the first year of life. There is a direct and positive correlation between weight, length and head circumference with neurocognitive development at 6, 9, 12 and 18 months. Gestational age correlated with better neurodevelopment at 3 and 6 months. CONCLUSIONS: Children born SGA present lower neurodevelopment than the control population. A greater impact on weight, length, and head circumference at birth is correlated with poorer neurocognitive development. Multiparity does not show significant influence on neurodevelopment evolution.

[Growth hormone deficit: Influence of puberty on the response to treatment]. / Déficit de hormona de crecimiento: influencia de la pubertad en la respuesta al tratamiento.

INTRODUCTION: Short stature is the most frequent reason for consultation in Pediatric Endocrinology consultations and sometimes requires treatment with growth hormone. The aim of the study was to analyze the response to treatment based on its onset in pubertal or prepubertal stages and to analyze the possible benefit of an early onset. PATIENTS AND METHODS: Longitudinal, retrospective and observational study in 139 patients treated for idiopathic growth hormone deficiency up to adult height. MAIN VARIABLES STUDIED: (a) genetic background: maternal, paternal and genetic height; (b) perinatal history; (c) anthropometry during follow-up and at pubertal onset: weight, height, body mass index; (d) variables during follow-up and at pubertal onset: growth rate, bone age and growth prognosis. Final response variables: adult height, adult height with respect to target height, adult height with respect to initial growth prediction, adult height with respect to initial height at the start of treatment and adult height with respect to height at pubertal onset. RESULTS: Total pubertal gain was 0.84±0.6 SD. 61.9% of the patients started treatment with rhGH in prepuberty. The initiation of treatment in the prepubertal stage and a higher total pubertal gain are correlated with a better final height (P=.001 and r=0.507, P=.00, respectively). Furthermore, a longer duration of treatment in pre-puberty is correlated with a better final response (r=0.328, P=.00). CONCLUSIONS: The start of treatment in the prepubertal stage and its longer duration during this period are determining factors to achieve a good long-term response. Total pubertal gain was greater in patients who started treatment in the pubertal stage.

Growth hormone deficit. Does the first year of treatment influence adult height? / Déficit de hormona de crecimiento, ¿influye el primer año de tratamiento en la talla final?

INTRODUCTION: Short stature is the most frequent reason for Pediatric Endocrinology consultations and sometimes requires treatment with growth hormone. OBJECTIVE: The possible correlation of a good response to any early response factor with a better final response was studied, and also whether there was a difference in response to treatment according to the type of deficit. PATIENTS AND METHODS: This was a longitudinal, retrospective and observational study of 139 patients treated for idiopathic growth hormone deficiency up to adult height. There were good response criteria in the first year of treatment: a) an increase in growth rate≥3cm / year, b) a growth rate≥1 standard deviation (SD), c) an increase in height≥0.5 SD, d) an increase in height≥0.3 SD. Study of the Index of Responsiveness to treatment in the first and second year. Final response variables: adult height with respect to target height, adult height with respect to initial growth prediction and adult height with respect to initial height at the start of treatment. The possible correlation of a good response to any of the early response factors with a better final response to treatment was studied, and also whether there was a difference in the response to treatment according to the type of deficit. RESULTS: The treatment produced a gain in adult height with respect to genetic height of 0.06±0.7 SD. Patients considered good responders in the first year of treatment presented a better final response (growth rate≥3cm: p=0.000, growth rate≥1 SD: p=0.008, height gain≥0.5 SD: P=0.007, height gain≥0.3 SD: P=0.006), as well as patients with a severe deficit (P=0.04). The index of responsiveness to treatment during the first year was associated with a better final response (r=0.249, P=0.003), with this correlation being maintained in the second year (r=0.294, P=0.01). CONCLUSIONS: Growth hormone treatment increased height in the genetic target. The percentage of good responders varied depending on the criteria used. The response in the first year of treatment and a severe deficit were determining factors for achieving a good long-term response.

Osteogénesis imperfecta: análisis de 40 pacientes / Osteogenesis imperfecta: Review of 40 patients

INTRODUCCIÓN: La osteogénesis imperfecta (OI) es una enfermedad genética heterogénea manifestada como fragilidad ósea y fracturas. PACIENTES Y MÉTODOS: Estudio descriptivo retrospectivo analizando características clínicas, genéticas y tratamiento de pacientes diagnosticados de OI (1989-2017) en el Hospital Universitario Miguel Servet, Zaragoza (Endocrinología Pediátrica y Reumatología). RESULTADOS: Incluidos 40 pacientes; 32,5% varones, 67,5% mujeres; 29 niños, 11 adultos. Media de fracturas al diagnóstico en OI leve 4,6±6,4 (edad media al diagnóstico 7,8±12,8años), en OI moderada 1,7±2,4 (edad media al diagnóstico 0,04±0,3años), en OI grave 3,7±2,1 y en OI muy grave 12,5±7,8, ambos grupos diagnosticados al nacimiento. Estudio genético en 32 pacientes, 25 con variante patogénica/probablemente patogénica, siendo COL1A1 el gen más frecuentemente afectado. En 7 pacientes no fue encontrada la variante responsable, 5 con confirmación diagnóstica (estudio bioquímico colágenoI). Tratamiento con bifosfonatos 19 pacientes; 7 asociando hormona de crecimiento. Los tratados con bifosfonatos han presentado mejoría clínica (reducción de dolor óseo y/o irritabilidad) y reducción del número de fracturas. CONCLUSIONES: El gen COL1A1 es el más frecuentemente afectado en nuestros pacientes. El tratamiento debe ser multidisciplinar y el uso de bifosfonatos proporciona mejoría

INTRODUCTION: Osteogenesis imperfecta (OI) is a heterogeneous genetic disease manifesting as bone fragility and fractures. PATIENTS AND METHODS: Retrospective descriptive study analysing clinical and genetic features, and treatment of patients with OI. RESULTS: Forty patients were included; 32.5% males, 67.5% females; 29 children, 11 adults. Number of fractures at diagnosis with mild OI was 4.6±6.4 (average age at diagnosis 7.8±12.8years), with moderate OI 1.7±2.4 (age at diagnosis .04±.3years), in severe OI 3.7±2.1 and in extremely severe forms 12.5±7.8, both groups diagnosed at birth. Genetic study in 32 patients, 25 with a positive genetic study (pathogenic/probably pathogenic variant). COL1A1 gene was the most frequently affected. In 7 patients, no pathogenic or probably pathogenic variant was found (5 diagnosed by biochemical study of typeI collagen). Nineteen patients were treated with bisphosphonates; 7 combined with growth hormone. The patients treated with bisphosphonates showed clinical improvement (reduction of bone pain and/or irritability) and reduction of fractures. CONCLUSIONS: The COL1A1 gene is the most frequently affected. OI patients should receive multidisciplinary management and bisphosphonates can improve their quality of life

Crecimiento hasta edad adulta en una población nacida pequeña para la edad gestacional tratada con hormona de crecimiento / Adult height in short children born small for gestational age treated with growth hormone

ANTECEDENTES Y OBJETIVO: El tratamiento con hormona de crecimiento recombinante humana (rhGH) en niños nacidos pequeños para la edad gestacional (PEG) se ha mostrado eficaz, aunque con variedad en la respuesta. Se evalúa la talla adulta y los factores que determinan la respuesta a largo plazo. PACIENTES Y MÉTODOS: Estudio retrospectivo de 80 pacientes PEG tratados con rhGH por baja talla y seguidos hasta la talla adulta (23 varones). RESULTADOS: El grupo que inició el tratamiento antes de la pubertad alcanzó mayor talla adulta (−1,4±0,6 vs. −1,9±0,6 púberes). Existió mayor ganancia de talla en los tratados durante ≥ 2 años en prepubertad (1,32±0,5 SDE). Los factores asociados con una mayor ganancia de talla fueron: a) la menor talla, peso e IMC al inicio; b) la menor edad cronológica, ósea y el menor nivel de IGF-I iniciales; c) la mayor distancia con la talla genética; d) la mayor velocidad de crecimiento el primer y el segundo año y la mayor ganancia de talla previa y durante la pubertad. El porcentaje de buena respuesta en el primer año varió entre el 46,6 y el 81,6% en función del criterio empleado. El incremento de la velocidad de crecimiento≥3cm/año es el que mejor se relaciona con buena respuesta a largo plazo. CONCLUSIONES: El tratamiento con rhGH en niños PEG produce un incremento variable de talla adulta, que les permite alcanzar su rango genético. Los mejores resultados se producen en el grupo con mayor número de años en tratamiento en la prepubertad y no dependen de la respuesta hipofisaria de GH

BACKGROUND AND OBJECTIVE: Recombinant human growth hormone (rhGH) treatment in small for gestational age (SGA) children has been effective, although there is significant variability in the response. Adult height and the factors that determine the long-term response are evaluated. Patients and DESIGN: A retrospective study of 80 patients born SGA with short stature treated with rhGH and followed until adult height (23 males). RESULTS: The group starting treatment pre-puberty reached a higher Adult height (−1.4±0.6 vs. −1.9±.6 in pubertal children), the highest final height gain was achieved in those treated for at least 2years prepuberty (1.32±.5 SDS). Factors associated with greater adult height gain were: a) less height, weight and BMI at start of treatment, b) lower chronological and bone age with lower IGF-I before treatment, c) greater distance to target height, d) higher growth velocity the first and second year of treatment, and higher height gain before and during puberty. The percentage of patients with good response in the first year ranged from 46.6% to 81.6% depending on the criteria. Growth velocity increase ≥3cm/ first year correlated best with long-term response. CONCLUSION: rhGH treatment in children born SGA produced a varying increase in adult height that allowed them to reach their adult height. The best results occurred in the prepubertal group and did not depend on pituitary GH response

Osteogenesis imperfecta: Review of 40 patients. / Osteogénesis imperfecta: análisis de 40 pacientes.

INTRODUCTION: Osteogenesis imperfecta (OI) is a heterogeneous genetic disease manifesting as bone fragility and fractures. PATIENTS AND METHODS: Retrospective descriptive study analysing clinical and genetic features, and treatment of patients with OI. RESULTS: Forty patients were included; 32.5% males, 67.5% females; 29 children, 11 adults. Number of fractures at diagnosis with mild OI was 4.6±6.4 (average age at diagnosis 7.8±12.8years), with moderate OI 1.7±2.4 (age at diagnosis .04±.3years), in severe OI 3.7±2.1 and in extremely severe forms 12.5±7.8, both groups diagnosed at birth. Genetic study in 32 patients, 25 with a positive genetic study (pathogenic/probably pathogenic variant). COL1A1 gene was the most frequently affected. In 7 patients, no pathogenic or probably pathogenic variant was found (5 diagnosed by biochemical study of typeI collagen). Nineteen patients were treated with bisphosphonates; 7 combined with growth hormone. The patients treated with bisphosphonates showed clinical improvement (reduction of bone pain and/or irritability) and reduction of fractures. CONCLUSIONS: The COL1A1 gene is the most frequently affected. OI patients should receive multidisciplinary management and bisphosphonates can improve their quality of life.

Hipertirotropinemia en pediatría, ¿cómo debemos actuar? / Hyperthyrotropinaemia in children; What should we do?

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Adult height in short children born small for gestational age treated with growth hormone. / Crecimiento hasta edad adulta en una población nacida pequeña para la edad gestacional tratada con hormona de crecimiento.

BACKGROUND AND OBJECTIVE: Recombinant human growth hormone (rhGH) treatment in small for gestational age (SGA) children has been effective, although there is significant variability in the response. Adult height and the factors that determine the long-term response are evaluated. PATIENTS AND DESIGN: A retrospective study of 80 patients born SGA with short stature treated with rhGH and followed until adult height (23 males). RESULTS: The group starting treatment pre-puberty reached a higher Adult height (-1.4±0.6 vs. -1.9±.6 in pubertal children), the highest final height gain was achieved in those treated for at least 2years prepuberty (1.32±.5 SDS). Factors associated with greater adult height gain were: a) less height, weight and BMI at start of treatment, b) lower chronological and bone age with lower IGF-I before treatment, c) greater distance to target height, d) higher growth velocity the first and second year of treatment, and higher height gain before and during puberty. The percentage of patients with good response in the first year ranged from 46.6% to 81.6% depending on the criteria. Growth velocity increase ≥3cm/ first year correlated best with long-term response. CONCLUSION: rhGH treatment in children born SGA produced a varying increase in adult height that allowed them to reach their adult height. The best results occurred in the prepubertal group and did not depend on pituitary GH response.

Osteogénesis imperfecta causada por mutación en los genes COL1A1, CRTAP y LEPRE1. Estudio de 2casos / Osteogenesis imperfecta caused by COL1A1, CRTAP and LEPRE1 mutations. Report of 2cases

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Calidad de vida y estados crónicos de salud en supervivientes de leucemia aguda infantil / Quality of life and chronic health conditions in childhood acute leukaemia survivors

Introducción: El aumento en la supervivencia de la leucemia aguda (LA) infantil conlleva un incremento de morbilidades a largo plazo que acompañado del impacto ocasionado por el tratamiento puede alterar la calidad de vida (CV). Objetivo: Evaluar la prevalencia de comorbilidades crónicas, CV y predictores de su desarrollo en supervivientes de LA. Métodos: Estudio transversal de una cohorte de 54 individuos con más de 10 años de supervivencia tras diagnóstico de LA. Se evaluaron la presencia de comorbilidades y la CV global, física y mental mediante cuestionario SF-36. Resultados: El 53,7% presentó ≥ 1 comorbilidad crónica (24,7% hipotiroidismo; 20,3% obesidad; 14,8% síndrome metabólico; 18,5% disfunción cardiaca subclínica). El 20,3% de ellas fueron comorbilidades graves. El 73,3% de LA alto riesgo y el 66,6% de los tratados con radioterapia o trasplante presentaron comorbilidad tardía, p<0,05. La puntuación media de CV global fue 86,3 (14) (muy buena). Reportaron peor CV global los pacientes con LA de alto riesgo (83,2 vs. 89,5), comorbilidades graves (80,4 vs. 88,7) y del sexo femenino (81,8 vs. 89,9), p <0,05. Los pacientes obesos (80 vs. 92), hipotiroideos (84,9 vs. 92,4) y tratados con RT (82,3 vs. 87,5) tuvieron peor CV física (p <0,05) y aquellos con hipogonadismo (68,2 vs. 83,6) y tratados con TPH (77,2 vs. 83,1) menos puntuación en CV mental, p <0,05. Conclusiones: Los supervivientes de LA presentan una alta prevalencia de comorbilidades crónicas, asociadas al tratamiento recibido. A pesar de que estas influyen en alguna de las subescalas de su CV, la percepción global fue muy buena, incluso superior a la media de la población general

Background: Survival of childhood acute lymphoblastic leukaemia involves an increasing risk of long-term morbidities. Due to the impact of cancer treatment and comorbidities, AL survivors may experience a decrease in their health-related quality of life. Objective: We aimed to describe the long-term comorbidities, related quality of life and their development predictors in these survivors. Methods: cross-sectional study of 54 survivors aged ≥18 and who have a survival rate of more than 10 years. Quality of life was assessed by personal interview using SF-36 questionnaire. Results: 53.7% of AL survivors developed more than one comorbidity (24.7% hypothyroidism; 20.3% obesity; 14.8% metabolic syndrome; 18.5% subclinical cardiac dysfunction); 20.3% of them were severe. 73.3% of high-risk leukaemias and 66.6% of patients treated with radiotherapy or stem cells transplantation reported long-term comorbidity, P<.05. Global quality of live score was: 86.3 (14) (classified as very good). Patients with high-risk acute leukaemia (83.2 vs. 89.5), severe long-term comorbidities (80.4 vs. 89.7) and females (81.8 vs. 89.9), reported worse quality of life, P<.05. Physical summary score was worse in: obese (80 vs. 92) and hypothyroid (84.9 vs. 92.4) and radiotherapy-treated survivors (82.3 vs. 87.5); mental summary was worse in survivors with hypogonadism (68.2 vs. 86.3) and trasplanted patients (77.2 vs. 83.1), P<.05. Conclusions: Acute leukaemia survivors reported an increase prevalence of chronic comorbidities, related to cancer-treatment. Despite a decrease in scores for certain physical or mental items, global quality of life was very good in all acute leukaemia survivors, even better than compared with the general population