Should children with isolated premature adrenarche be routinely evaluated for non-classical congenital adrenal hyperplasia?

Quality of Life in Children Diagnosed With Non-classic Congenital Adrenal Hyperplasia

Background

Non-classical congenital adrenal hyperplasia (NC-CAH) is a chronic disease characterised by excessive androgen production that may negatively affect the quality of life (QoL) of affected patients. Pediatric Quality of Life Inventory 4.0 (PedsQL™) is a validated tool to assess health-related QoL (HRQoL).

Methods

A cross-sectional study including 19 patients with NC-CAH was carried out in the pediatric endocrinology department. NC-CAH patients who agreed to participate were included. Anthropometric data was collected. PedsQL™ was applied to the patients and their parents. Patients were divided into four groups according to age: 2-4, 5-7, 8-12, and 13-18 years old. The control group consisted of healthy individuals from the instrument's validation studies for the Portuguese population and the standard control population used in the PedsQL™ validation study.

Results

The only difference found concerns the parents' score results for children aged 8-12, which showed physical health and emotional dimension scores significantly higher (86.16±9.86 vs.68.90±23.02 p=0.004, 69.17±14.14 vs. 65.82±19.24 p=0.004), while psychosocial health's score and total scale score were significantly lower than the control group (59.99±9.90 vs. 69.34±14.07 p=0.047, 73.11±4.65 vs.78.86±16.61 p=0.017).

Conclusion

HRQoL scores are not negatively affected by NC-CAH in most group ages, with the exception of the parents' reports on HRQoL for children aged 8-12. Further studies with a greater number of patients are needed to determine the impact of this chronic disease on the HRQoL of children.

Role of Body Weight in the Onset and the Progression of Idiopathic Premature Pubarche

BACKGROUND

The term premature pubarche (PP) refers to the appearance of pubic hair before age 8 in girls and before age 9 in boys. Although idiopathic PP (often associated with premature adrenarche) is considered an extreme variation from the norm, it may be an initial sign of persistent hyperandrogenism. Factors contributing to PP onset and progression have not been identified to date.

AIMS

The objectives of this study are to describe a group of Italian children with PP, to identify potential factors for its onset, and to define its clinical and biochemical progression.

METHODS

We retrospectively enrolled all infants born between 2001 and 2014 with PP. Children with advanced bone age (BA) underwent functional tests to determine the cause of PP. Hormonal analysis and BA determination were performed annually during a 4-year follow-up period.

RESULTS

A total of 334 children with PP were identified: idiopathic PP (92.5%, associated with premature adrenarche in some cases); related to precocious puberty (6.6%); late-onset 21-hydroxylase deficiency (0.9%). Low birth weight was associated with premature adrenal activation. Body mass index (BMI) was the only factor that influenced the progression of BA during follow-up.

CONCLUSIONS

Low birth weight is a predisposing factor for premature adrenal activation. The increase in BMI in patients with idiopathic PP during the 4-years of follow-up was responsible for BA acceleration. We recommend prevention of excessive weight gain in children with PP and strict adherence to follow-up in order to prevent serious metabolic consequences.

Low prevalence of organic pathology in a predominantly black population with premature adrenarche: need to stratify definitions and screening protocols

Background

Premature adrenarche has been described as clinical and biochemical hyperandrogenism before the age of 8 years in girls and 9 years in boys and absence of signs of true puberty. Adrenal pathology such as adrenal tumors or non-classical congenital adrenal hyperplasia (NCCAH) and exogenous androgen exposure need to be excluded prior to diagnosing (idiopathic) premature adrenarche. Premature adrenarche is more common among black girls compared to white girls and other racial groups. Adrenal pathology such as NCCAH is less common as a cause for premature adrenarche compared with idiopathic premature adrenarche. The evaluation guidelines for premature adrenarche however are not individualized based on racial/ethnic differences. Few studies have been done to evaluate a largely black population with premature adrenarche to assess the incidence of adrenal pathology.

Methods

This cross-sectional retrospective study evaluated characteristics of prepubertal patients seen in an endocrine clinic for premature adrenarche.

Results

Two hundred and seventy three subjects had signs of early adrenarche. Three subjects were found to have CAH (2 with NCCAH and 1 with late diagnosis classical CAH). None were black. Exogenous androgen exposure was etiology in 4 additional subjects. These 7 patients were excluded from further analysis. The remaining subjects had idiopathic PA (n = 266); 76.7% were females. The mean age at initial visit was 6.42 +/− 1.97 years (with no racial difference) although black subjects were reported symptom onset at a significantly younger age compared to non-Hispanic white patients.

Conclusions

Our study showed organic pathology was very uncommon in a predominantly black population with premature adrenarche. Patient factors that influence the probability of an underlying organic pathology including race/ ethnicity should be considered to individualize evaluation.

[Natural progression of premature pubarche and underlying diseases]

INTRODUCTION

Premature pubarche (PP) is generally thought to be a benign condition, but it can also be the first sign of underlying disease.

OBJECTIVE

To analyse the aetiology and the evolution of the anthropometric, analytical and metabolic risk parameters of a group of patients with PP.

MATERIAL AND METHODS

A descriptive and analytical retrospective study of 92 patients affected by PP. Anthropometry, analyses, bone age and indicators of lipid metabolism were all evaluated.

RESULTS

The sample included 92 patients with PP (67 female and 25 male), with a mean age of 7.1±0.6 for girls and 8.3±0.7 for boys. Small for gestational age was recorded in 7.7%. There was an accelerated bone age (1.20±0.1 years). A total of 21 patients were classified as idiopathic (23%), 60 as idiopathic premature adrenarche (65%), and 11 with non-classic congenital adrenal hyperplasia (12%). Puberty was reached early (11+0.9 years old in boys and 9.9±0.8 in girls), as was menstruation age (11.8+1.1 years old), P<.001. The stature finally reached was close to their genetic stature. There is a positive correlation between body mass index, blood glucose and LDL cholesterol, as well as a tendency towards hyperinsulinaemia.

CONCLUSIONS

The present study shows that PP is a benign condition in the majority of cases, but non-classic congenital adrenal hyperplasia (12%) is not uncommon. Menstruation and puberty started early and bone age was accelerated. Growth was normal, and more or less in line with genetic size. PP associated with obesity is linked with analytical variations of metabolic risks.

Children with premature pubarche: is an alterated neonatal 17-Ohp screening test a predictive factor?

BACKGROUND

Neonatal screening for 21 hydroxylase deficiency is designed to detect classical form of congenital adrenal hyperplasia (CAH). It is still unclear whether newborns who result false positives at neonatal screening might later develop signs of androgen excess. The aim of this study is to verify whether a slightly elevated 17-OHP at newborn screening is a predictive factor for premature pubarche.

METHODS

We evaluated all infants born between 2001 and 2014 with premature pubarche. In case of increased bone age, they were submitted to functional tests to find out the cause of their symptoms. Their 17-OHP values at newborn screening for CAH were reconsidered.

RESULTS

We identified 330 patients (269 females, 61 males) with premature pubarche. All these children had a normal 17-OHP at newborn screening with the exception of a child, born preterm and not affected by CAH.

CONCLUSIONS

An elevated 17-OHP at newborn screening is not a predictive factor for premature pubarche. A likely cause of increased 17-OHP level at screening is an immaturity of adrenal gland or a neonatal stress. Therefore a strict follow up of these neonates during childhood is not necessary.