Landscape of TPMT and NUDT15 Pharmacogenetic Variation in a Cohort of Canadian Pediatric Inflammatory Bowel Disease Patients.

Background: Patients with inflammatory bowel disease (IBD) exhibit considerable interindividual variability in medication response, highlighting the need for precision medicine approaches to optimize and tailor treatment. Pharmacogenetics (PGx) offers the ability to individualize dosing by examining genetic factors underlying the metabolism of medications such as thiopurines. Pharmacogenetic testing can identify individuals who may be at risk for thiopurine dose-dependent adverse reactions including myelosuppression.

Outcomes Following Acute Severe Colitis at Initial Presentation: A Multi-centre, Prospective, Paediatric Cohort Study.

Aim: To assess contemporary outcomes in children with acute severe ulcerative colitis [ASUC] at initial presentation.

Methods: Between April 2014 and January 2019, children aged <17 years, with new onset ASUC (Paediatric Ulcerative Colitis Activity Index [PUCAI ≥65) were prospectively followed in a Canadian inception cohort study. 16S rRNA amplicon sequencing captured microbial composition of baseline faecal samples.

A Comparison of Preference-Based, Generic and Disease-Specific Health-Related Quality of Life in Pediatric Inflammatory Bowel Disease.

Objective: Generic preference-based HRQOL assessments used expressly for economic evaluation have not been examined in pediatric Crohn's disease (CD) and ulcerative colitis (UC). The objective was to further assess the construct validity of preference-based HRQOL measures in pediatric IBD by comparing the Child Health Utility 9 Dimensions (CHU9D) and Health Utilities Index (HUI) to the disease-specific IMPACT-III and to the generic PedsQL in children with CD and with UC.

Methods: The CHU9D, HUI, IMPACT-III and/or PedsQL were administered to Canadian children aged 6 to 18 years with CD and UC.

A comparison of the Child Health Utility 9D and the Health Utilities Index for estimating health utilities in pediatric inflammatory bowel disease.

Purpose: Health utilities are challenging to ascertain in children and have not been studied in pediatric Crohn's disease (CD) and ulcerative colitis (UC). The objective was to assess discriminative validity by comparing utilities elicited using the Child Health Utility-9 Dimension (CHU9D) to the Health Utilities Index (HUI) across multiple disease activity scales in pediatric UC and CD.

Methods: Preference-based instruments were administered to 188 children with CD and 83 children with UC aged 6 to 18 years.

Inflammatory Bowel Disease Among Canadian Children: Comparison Between Children of Non-European Descent and Children of European Descent.

Background: Inflammatory bowel disease (IBD) phenotypes may differ between countries and ancestral groups. The study aim was to examine ancestry and subtype variations of children newly diagnosed with IBD.

Methods: Children newly diagnosed with IBD enrolled into the Canadian Children Inflammatory Bowel Disease Network inception cohort study were categorized into 8 ancestral groups.

School nutrition: Support for providing healthy food and beverage choices in schools.

The implementation of nutrition policies and guidelines in Canadian schools has increased the availability and consumption of nutrient-rich foods while reducing access to and consumption of foods and beverages that are high in sugars, sodium, and saturated fats. Positive changes in health outcomes for children and youth, such as improved body mass indices, have been observed. However, observed impacts of school nutrition policies on academic performance have been mixed.

Iron requirements in the first 2 years of life.

Iron is an essential micronutrient required for hemoglobin synthesis, central nervous system development, and protection from infection. Early childhood is a time of vulnerability as iron deficiency in this period is associated with impaired neurodevelopment. Low socioeconomic status, preterm birth, and suboptimal diet are risk factors for iron deficiency.

Canadian Association of Gastroenterology Clinical Practice Guideline for the Medical Management of Pediatric Luminal Crohn's Disease.

Background & Aims: We aim to provide guidance for medical treatment of luminal Crohn's disease in children.

Methods: We performed a systematic search of publication databases to identify studies of medical management of pediatric Crohn's disease. Quality of evidence and strength of recommendations were rated according to the GRADE (Grading of Recommendation Assessment, Development, and Evaluation) approach.

Canadian Association of Gastroenterology Clinical Practice Guideline for the Medical Management of Pediatric Luminal Crohn's Disease.

Background & Aims: We aim to provide guidance for medical treatment of luminal Crohn's disease in children.

Methods: We performed a systematic search of publication databases to identify studies of medical management of pediatric Crohn's disease. Quality of evidence and strength of recommendations were rated according to the GRADE (Grading of Recommendation Assessment, Development, and Evaluation) approach.

Phenotypic Variation in Paediatric Inflammatory Bowel Disease by Age: A Multicentre Prospective Inception Cohort Study of the Canadian Children IBD Network.

Background And Aims: Incidence of paediatric inflammatory bowel disease [IBD] in Canada is among the highest worldwide, and age of onset may be decreasing. In a multicentre nationwide inception cohort study, we examined variation in phenotype of IBD throughout the paediatric age spectrum.

Methods: Children aged ≥2 years [y] and <17y [A1 age at diagnosis], with new onset IBD, were systematically evaluated at sites of the Canadian Children IBD Network.

Allied Health Professional Support in Pediatric Inflammatory Bowel Disease: A Survey from the Canadian Children Inflammatory Bowel Disease Network-A Joint Partnership of CIHR and the CH.I.L.D. Foundation.

Objectives: The current number of healthcare providers (HCP) caring for children with inflammatory bowel disease (IBD) across Canadian tertiary-care centres is underinvestigated. The aim of this survey was to assess the number of healthcare providers (HCP) in ambulatory pediatric IBD care across Canadian tertiary-care centres.

Methods: Using a self-administered questionnaire, we examined available resources in academic pediatric centres within the Canadian Children IBD Network.

A national retrospective study of paediatric end-stage liver disease as a predictor of change to second-line therapy in children with autoimmune hepatitis.

Background & Aims: Adult studies of autoimmune hepatitis (AIH) have shown that the model of end-stage liver disease is associated with resistance to first-line treatment. Using a multicentre retrospective database, we sought to determine if the paediatric end-stage liver disease (PELD) score would similarly predict treatment resistance in paediatric AIH.

Methods: One hundred and seventy-one children from 13 Canadian centres who fulfilled the International Autoimmune Hepatitis Group (IAIHG) criteria were included and assessed for change to second-line therapy within 24 months of primary treatment onset.

Enteral Feeding Therapy for Maintaining Remission in Crohn's Disease: A Systematic Review.

Background: The efficacy of enteral nutrition (EN) for maintaining remission in patients with inactive Crohn's disease (CD) is unclear. The aim of this article was to systematically identify, review, and critically appraise the evidence on efficacy of EN in maintaining medically induced remission in CD.

Materials And Methods: Several databases were searched from inception to April 2015 for relevant citations of published randomized controlled trials and nonrandomized cohort studies.

Incidence and Characteristics of Autoimmune Hepatitis.

Background And Objectives: Autoimmune hepatitis (AIH) is a progressive inflammatory liver disease of unknown etiology, with limited population-based estimates of pediatric incidence. We reported the incidence of pediatric AIH in Canada and described its clinical characteristics.

Methods: We conducted a retrospective cohort study of patients aged <18 years diagnosed with AIH between 2000-2009 at all pediatric centers in Canada.

Toward enteral nutrition for the treatment of pediatric Crohn disease in Canada: a workshop to identify barriers and enablers.

The treatment armamentarium in pediatric Crohn disease (CD) is very similar to adult-onset CD with the notable exception of the use of exclusive enteral nutrition (EEN [the administration of a liquid formula diet while excluding normal diet]), which is used more frequently by pediatric gastroenterologists to induce remission. In pediatric CD, EEN is now recommended by the pediatric committee of the European Crohn's and Colitis Organisation and the European Society for Paediatric Gastroenterology Hepatology and Nutrition as a first-choice agent to induce remission, with remission rates in pediatric studies consistently >75%. To chart and address enablers and barriers of use of EEN in Canada, a workshop was held in September 2014 in Toronto (Ontario), inviting pediatric gastroenterologists, nurses and dietitians from most Canadian pediatric IBD centres as well as international faculty from the United States and Europe with particular research and clinical expertise in the dietary management of pediatric CD.

Nutrition for healthy term infants, six to 24 months: An overview.

Nutrition for Healthy Term Infants is a joint statement by Health Canada, the Canadian Paediatric Society, Dietitians of Canada and the Breastfeeding Committee for Canada. It was republished in September 2012, with recommendations on infant feeding from birth to six months of age. The statement was most recently updated in April 2014, with recommendations for feeding older infants and young children from six to 24 months of age.

Nutrition for healthy term infants, birth to six months: An overview.

Nutrition for healthy term infants is a joint statement by Health Canada, the Canadian Paediatric Society, Dietitians of Canada and the Breastfeeding Committee for Canada that was most recently updated in September 2012 with recommendations from birth to six months of age. This practice point outlines the development process, principles of infant feeding, and recommendations for clinicians. Health professionals involved in counselling families about infant nutrition are advised to read the statement in its entirety, because the underlying discussions expand upon and clarify the advice summarized in the principles and recommendations.

Infantile colic: Is there a role for dietary interventions?

Infantile colic is a behavioural syndrome of early childhood that is associated with irritability and crying. It self-resolves, but may lead to significant parental strife. The etiology is unknown; however, several investigators have examined the effect of nutrition on infantile colic.

Use of enteral nutrition for the control of intestinal inflammation in pediatric Crohn disease.

Exclusive enteral nutrition is an effective yet often underused therapy for the induction of remission in pediatric Crohn disease. The North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition formed the Enteral Nutrition Working Group to review the use of enteral nutrition therapy in pediatric Crohn disease. The group was composed of 5 pediatric gastroenterologists and 1 pediatric nutritionist, all with an interest and/or expertise in exclusive enteral nutrition.

The minimal detectable change cannot reliably replace the minimal important difference.

Objective: We compared the minimal important difference (MID) with the minimal detectable change (MDC) generated by distribution-based methods.

Study Design: Studies of two quality-of-life instruments (Chronic Respiratory Questionnaire [CRQ] and Rhinoconjunctivitis Quality of Life Questionnaire [RQLQ]) and two physician-rated disease-activity indices (Pediatric Ulcerative Colitis Activity Index [PUCAI] and Pediatric Crohn's Disease Activity Index [PCDAI]) provided longitudinal data. The MID values were calculated from global ratings of change (small change for CRQ and RQLQ; moderate for PUCAI and PCDAI) using receiver-operating characteristic (ROC) curve and mean change.