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Updated: Jul 16, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Thiopurines are negatively associated with anthropometric parameters in pediatric Crohn's disease
Neera Gupta1, Robert H Lustig2, Cewin Chao3
1Division of Gastroenterology and Nutrition, Department of Pediatrics, Weill Cornell Medicine, New York, NY 10021, United States. neg9020@med.cornell.edu.
Insights
In pediatric Crohn's disease (CD), thiopurine medications showed poor efficacy, while infliximab may have sex-specific effects on growth. Further longitudinal studies are needed to confirm these findings in pediatric CD patients.
Area of Science:
- Pediatric Gastroenterology
- Inflammatory Bowel Disease Research
- Growth and Development Studies
Background:
- Pediatric Crohn's disease (CD) significantly impacts growth and development.
- Understanding the relationship between treatments, biomarkers, and anthropometric parameters is crucial for managing pediatric CD.
- Current knowledge gaps exist regarding the efficacy of specific medications and the influence of serum biomarkers on growth in this population.
Purpose of the Study:
- To analyze the distribution of anthropometric parameter (AP)-z-scores in pediatric CD patients.
- To investigate the associations between various medications and serum biomarkers with AP-z-scores.
- To evaluate the efficacy of thiopurines and potential sex-specific growth responses to infliximab.
Main Methods:
- A cross-sectional study involving pediatric CD patients under 21 years old.
- Calculation and comparison of AP-z-scores based on chronological age (CA) and bone age (BA).
- Linear regression analysis to determine associations between medications/serum biomarkers and AP-z-scores (n=82 for CA, n=49 for BA).
Main Results:
- Bone age z-scores for triceps skinfold, subscapular skinfold, and mid-arm circumference were higher than chronological age z-scores.
- Adalimumab and methotrexate were positively associated with subscapular skinfold and BMI z-scores, while azathioprine/6-mercaptopurine showed negative associations with several anthropometric measures.
- Infliximab demonstrated a potential sex difference in height z-scores, with females showing higher scores. Specific biomarkers like hemoglobin, ESR, CRP, albumin, and IGF-1 also showed significant associations with anthropometric parameters.
Conclusions:
- Results indicate limited efficacy of thiopurine medications in pediatric CD.
- A possible sex-specific difference in statural growth response to infliximab treatment was observed.
- Further prospective longitudinal studies are necessary to validate these findings and guide treatment strategies.
Aim:
To determine the distribution of anthropometric parameter (AP)-z-scores and characterize associations between medications/serum biomarkers and AP-z-scores in pediatric Crohn's disease (CD).
Methods:
CD patients [< chronological age (CA) 21 years] were enrolled in a cross-sectional study. Descriptive statistics were generated for participants' demographic characteristics and key variables of interest. Paired t-tests were used to compare AP-z-scores calculated based on CA (CA z-scores) and bone age (BA) (BA z-scores) for interpretation of AP's. Linear regression was utilized to examine associations between medications and serum biomarkers with AP-z-scores calculated based on CA (n = 82) and BA (n = 49). We reported regression coefficients as well as their corresponding p-values and 95% confidence intervals.
Results:
Mean CA at the time of the study visit was 15.3 ± 3.5 (SD; range = 4.8-20.7) years. Mean triceps skinfold (P = 0.039), subscapular skinfold (P = 0.002) and mid-arm circumference (MAC) (P = 0.001) BA z-scores were higher than corresponding CA z-scores. Medications were positively associated with subscapular skinfold [adalimumab (P = 0.018) and methotrexate (P = 0.027)] and BMI CA z-scores [adalimumab (P = 0.029)]. Azathioprine/6-mercaptopurine were negatively associated with MAC (P = 0.045), subscapular skinfold (P = 0.014), weight (P = 0.002) and BMI (P = 0.013) CA z-scores. ESR, CRP, and WBC count were negatively associated, while albumin and IGF-1 BA z-scores were positively associated, with specific AP z-scores (P < 0.05). Mean height CA z-scores were higher in females, not males, treated with infliximab (P = 0.038). Hemoglobin (P = 0.018) was positively associated, while platelets (P = 0.005), ESR (P = 0.003) and CRP (P = 0.039) were negatively associated with height CA z-scores in males, not females.
Conclusion:
Our results suggest poor efficacy of thiopurines and a possible sex difference in statural growth response to infliximab in pediatric CD. Prospective longitudinal studies are required.
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