Author Archives: gutsandgrowth

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About gutsandgrowth

I am a pediatric gastroenterologist at GI Care for Kids (previously called CCDHC) in Atlanta, Georgia. The goal of my blog is to share some of my reading in my field more broadly. In addition, I wanted to provide my voice to a wide range of topics that often have inaccurate or incomplete information. Before starting this blog in 2011, I would tear out articles from journals and/or keep notes in a palm pilot. This blog helps provide an updated source of information that is easy to access and search, along with links to useful multimedia sources. I was born and raised in Chattanooga. After graduating from the University of Virginia, I attended Baylor College of Medicine. I completed residency and fellowship training at the University of Cincinnati at the Children’s Hospital Medical Center. I received funding from the National Institutes of Health for molecular biology research of the gastrointestinal tract. During my fellowship, I had the opportunity to work with some of the most amazing pediatric gastroenterologists and mentors. Some of these individuals included Mitchell Cohen, William Balistreri, James Heubi, Jorge Bezerra, Colin Rudolph, John Bucuvalas, and Michael Farrell. I am grateful for their teaching and their friendship. During my training with their help, I received a nationwide award for the best research by a GI fellow. I have authored numerous publications/presentations including original research, case reports, review articles, and textbook chapters on various pediatric gastrointestinal problems. In addition, I have been recognized by Atlanta Magazine as a "Top Doctor" in my field multiple times. Currently, I am the vice chair of the section of nutrition for the Georgia Chapter of the American Academy of Pediatrics. In addition, I am an adjunct Associate Clinical Professor of Pediatrics at Emory University School of Medicine. Other society memberships have included the North American Society for Pediatric Gastroenterology Hepatology and Nutrition (NASPGHAN), American Academy of Pediatrics, the Food Allergy Network, the American Gastroenterology Association, the American Association for the Study of Liver Diseases, and the Crohn’s and Colitis Foundation. As part of a national pediatric GI organization called NASPGHAN (and its affiliated website GIKids), I have helped develop educational materials on a wide-range of gastrointestinal and liver diseases which are used across the country. Also, I have been an invited speaker for national campaigns to improve the evaluation and treatment of gastroesophageal reflux disease, celiac disease, eosinophilic esophagitis, hepatitis C, and inflammatory bowel disease (IBD). Some information on these topics has been posted at my work website, www.gicareforkids.com, which has links to multiple other useful resources. I am fortunate to work at GI Care For Kids. Our group has 17 terrific physicians with a wide range of subspecialization, including liver diseases, feeding disorders, eosinophilic diseases, inflammatory bowel disease, cystic fibrosis, DiGeorge/22q, celiac disease, and motility disorders. Many of our physicians are recognized nationally for their achievements. Our group of physicians have worked closely together for many years. None of the physicians in our group have ever left to join other groups. I have also worked with the same nurse (Bernadette) since I moved to Atlanta in 1997. For many families, more practical matters about our office include the following: – 14 office/satellite locations – physicians who speak Spanish – cutting edge research – on-site nutritionists – on-site psychology support for abdominal pain and feeding disorders – participation in ImproveCareNow to better the outcomes for children with inflammatory bowel disease – office endoscopy suite (lower costs and easier scheduling) – office infusion center (lower costs and easier for families) – easy access to nursing advice (each physician has at least one nurse) I am married and have two sons (both adults). I like to read, walk/hike, bike, swim, and play tennis with my free time. I do not have any financial relationships with pharmaceutical companies or other financial relationships to disclose. I have helped enroll patients in industry-sponsored research studies.

Why Corporatization Occurs in Health Care -What Motivates Hospitals

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S Lipstein. NEJM 2025; 393: 1249-1251. Insight into Corporate Governance — What Motivates Hospitals and Delivery Systems

This commentary provides a useful perspective on how hospitals view consolidation of health care. This article is one of many on the topic of corporatization of health care in recent NEJM issues. The author pushes back on the notion that the motivation is purely financial. And, the author argues that a lot of the concerns with poor outcomes/life expectancy despite high expenditures in health care actually are related mainly to poverty level, gun-related mortality, and public social services expenditures.

Here’s an excerpt:

Critics of such large-scale combinations argue that when clinical assets are aggregated within contiguous geographic areas, there is market consolidation. And market consolidation leads to anticompetitive behaviors, resulting in higher prices without concomitant quality improvements, fewer small innovative providers left to disrupt the status quo, and depressed wages for health care workers.

Delivery system leaders view asset aggregation in a different way — as a vehicle for efficient deployment of human, physical, and financial capital to achieve a health care mission. Upsizing by means of mergers and consolidation, hospitals and delivery systems realize benefits that come with economies of scale, spreading fixed operating costs…over a larger base of patient care revenue. Aggregating hospitals and physician practices within contiguous geographic areas enables systems to make large investments in facilities and technology that serve more people and avoid costly duplication….

Large-scale aggregation of health care delivery enterprises helps level the playing field with large-scale payers…

Often underappreciated is the importance for health systems of cultivating managerial bandwidth and subject-matter competencies unique to health care. As a health system grows, it gains the ability to compete on a national scale for top talent and expertise…

Use of the term “corporatization” suggests that health care mega-providers are money-motivated, focused on goals that are all about the bottom line. But money motivation in health care is not unique to big corporations…

In my experience, governing boards of delivery systems have four expectations of their executive leaders. Each expectation drives a financial motivation to generate the requisite revenues, operating margin, and investment capital.

First, to take good care of people when they are sick or injured and to help people remain as healthy… the delivery sector must have the financial capacity to invest in workforce skill development and training, renewal and expansion of patient care infrastructure and technology, and business and enterprise management systems…

Second, to operate in a financially responsible way, a delivery system needs to generate a positive operating margin, meaning revenues greater than expenses…

Third, to position a health care enterprise for long-term sustainability, it requires the financial fortitude to withstand the vagaries of economic and political cycles that might jeopardize the future availability of services…

And fourth, to stay true to a social or academic mission, many health care institutions make substantial financial commitments to their local communities and affiliated universities…

Comparisons of life expectancy and health spending are unadjusted for important differences among countries, including household income and poverty levels, gun-related mortality, and public social services expenditures.2,3 Nobody benefits if we ascribe poor health outcomes to corporatization and ignore true determinants…

Until we devise better solutions to improve the health of people whose economic disadvantages and behaviors reduce longevity, the United States will continue to lag.

My take: This article explains how health care systems view consolidation. Overall, my view is that the costs associated with hospitals are too high and some of this could be curtailed without affecting outcomes (see: When Hospitals Look Like The Ritz (But Cost Even More)).

Related blog posts:

Bouquet of Flowers, Claude Monet at the Met

NASPGHAN Pediatric Position Paper for Therapeutic Drug Monitoring

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LM Felipez et al. J Pediatr Gastroenterol Nutr. 2025;81:1100–1117. Open Access! North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition position paper on the therapeutic drug monitoring in pediatric inflammatory bowel disease

Therapeutic Drug Targets Based on Condition, Medication and Time of Therapy:

Discussion Points:

  • Pediatric Dosing is Different: “Pediatric studies have also determined adult infliximab targets are insufficient…In a prospective pediatric study, Clarkston et al. found that a trough level of 29 μg/mL at 2 weeks is required to achieve both clinical and biologic response. Patients with lower trough levels had 13-fold greater odds of clinical nonresponse. Additionally, a trough of 18 μg/mL at 6 weeks was associated with improved response. Patients with lower trough levels had sixfold greater odds of clinical nonresponse. They also observed that patients who did not achieve a trough >5–7 μg/mL by 14 weeks of therapy had a 21-fold increase in the odds of clinical nonresponse.62“
  • Undetectable/very low anti-TNF levels: “If the serum level is extremely low or undetectable, then full re-induction is warranted in addition to dose escalation.”
  • Timing of TDM: “As a practice point, TDM is routinely recommended at the end of induction for most patients. We recommend obtaining TDM earlier during induction in at-risk populations, including younger age children, those with hypoalbuminemia, and those with increased inflammatory burden.”
  • Maintenance proactive TDM: “Based on prospective randomized trial evidence, we recommend proactive TDM during maintenance every 6–12 months…yearly proactive TDM was associated with 55% reduced risk of developing antidrug antibodies.26“
  • Increased Antidrug Antibodies with Lower Infliximab Dosing: “In the pivotal REFINE study on immunogenicity in pediatric IBD, Coleman et al. found that antibodies to infliximab were detected in 68% of patients in the cohort, and starting dose under 7.5 mg/kg was one of the strongest predictors of developing antidrug antibodies.4“
  • Higher Doses Prevent Antidrug Antibodies: “The best available evidence for preventing immunogenicity supports initiating therapy with infliximab doses greater than 8 mg/kg, and in the case of hypoalbuminemia, doses greater than 10 mg/kg. For children <40 kg, doses of 200 mg/m2 are more appropriate.”
  • Perianal fistulas: “Overall, there is less evidence to support adalimumab use over infliximab for treatment of perianal fistulas. It is possible that adalimumab may have lower efficacy for perianal fistula.105 However, it is unclear if this is inherent to adalimumab, or if it relates to less frequent TDM or less frequent dose escalation in practice.”
  • Vedolizumab: “In general, as with other biologic therapies, a higher serum vedolizumab concentration is associated with higher likelihood of treatment response…Multiple studies identified that in patients with IBD (either UC or CD) early trough levels at Week 2132 with a cut off of >23.2 μg/mL or Week 6133, 134 with a cut off of above 22–28 μg/mL or at Week 14135) above 16.55 μg/mL predicted a higher likelihood of sustained response over the first year. In regard to clinical remission one study identified that corticosteroid free, clinical and biochemical remission was correlated to higher trough vedolizumab concentration.136“
  • Vedolizumab in younger patients: “Children under 30 kg require vedolizumab doses of 200 mg/m2 or 10 mg/kg.”

My take: “This NASPGHAN position paper should also serve to document that high-dose therapy, especially guided by TDM, is evidence-based standard of care.” This article clearly establishes three key points:

  1. “Intensive anti-TNF⍺ dosing strategies are not experimental. The initial doses of infliximab and adalimumab approved by the United States Food and Drug Administration (FDA) routinely lead to under-treatment, poor outcomes, and treatment discontinuation.60, 117 There is a rich, corroborated, and verified evidence-base to support the safety and efficacy of high-dose therapy anti-TNF⍺ therapy when clinically indicated, especially as supported by TDM.50, 62, 65, 100, 101, 103, 118“
  2. Therapeutic drug monitoring is essential in the pediatric population to optimize drug levels, allow many patients to do well with monotherapy, and to help avoid development of antidrug antibodies.
  3. The best available evidence supports TDM during induction of vedolizumab as well.

Related blog posts:

Disclaimer: This blog, gutsandgrowth, assumes no responsibility for any use or operation of any method, product, instruction, concept or idea contained in the material herein or for any injury or damage to persons or property (whether products liability, negligence or otherwise) resulting from such use or operation. These blog posts are for educational purposes only. Specific dosing of medications (along with potential adverse effects) should be confirmed by prescribing physician.  Because of rapid advances in the medical sciences, the gutsandgrowth blog cautions that independent verification should be made of diagnosis and drug dosages. The reader is solely responsible for the conduct of any suggested test or procedure.  This content is not a substitute for medical advice, diagnosis or treatment provided by a qualified healthcare provider. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a condition.

Forget the Surrogate Markers: Resolving MASH Improves Longevity Outcomes

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G Lassailly et al. Clin Gastroenterol Hepatol 2025; 23: 1567-1576. Open Access! Resolution of Metabolic Dysfunction-associated Steatohepatitis With No Worsening of Fibrosis After Bariatric Surgery Improves 15-year Survival: A Prospective Cohort Study

Methods: From 1994 to 2021, 3028 bariatric patients at the University Hospital of Lille were prospectively included. Baseline liver biopsies were systematically performed with proposed follow-up biopsies 1 year after surgery, mainly in patients with MASH. We evaluated the association of the baseline and 1-year histologic progression of MASH and fibrosis status and long-term survival. The median follow-up was 10.1 years. At baseline, 2641 patients (89%) had a biopsy, including 232 with MASH (8.7%) and 266 (10.8%) with significant fibrosis (grade F2-F4). At 1 year, 594 patients had qualitative paired biopsies.

Key findings:

  • 15-year survival was shorter in patients with baseline MASH (83.9%) than in
    those without (92.7%)
  • Similarly, the15-year survival rate was 79.8% in patients with significant fibrosis vs
    94.0% in patients without
  • Compared with patients without baseline MASH, mortality increased in those with persistent MASH and/or if fibrosis worsened (adjusted HR 2.54), but not if MASH resolved without the worsening of fibrosis (adjusted HR, 0.73). This translates to a 15-year survival of 79.8% in patients with persistent MASH or worsening of fibrosis compared to 92.9% with patients without MASH and 88.4% in patients with a histologic resolution of MASH without the worsening of fibrosis (see below)

My take (borrowed in part from the authors): “This is the first study to show that the resolution of MASH with no worsening of fibrosis is associated with improved long-term survival.” Thus, histologic improvement is a very useful surrogate marker for long-term benefit in MASH, whether this is due to bariatric surgery as in this study but also with medical treatment.

Related blog posts:

Related News: Steve Gardner, USAToday 9/16/25: Legendary Dolphins QB Dan Marino reveals liver disease diagnosis

An excerpt:

In an interview with People magazine, the former Miami Dolphins quarterback said he first began feeling “a little fatigued” in 2007, and found out after a routine checkup that he had metabolic dysfunction-associated steatohepatitis, or MASH…

Marino, 64, says he now exercises more regularly than he did after his playing days ended. And he’s made major adjustments to his diet after doctors told him to “cut back on the wine and pizza and candy, ice cream, those kind of things.”

Childhood Coffins Due to Cuts in Foreign Aid

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Nicholas Kristof, NY Times, 9/20/25: Trump’s Most Lethal Policy

Reporting from Uganda, Mr. Kristof reports on the devastating and worsening impact related to the cuts of foreign aid –without apparent cost savings. He details three particular avoidable deaths and outlines the larger problem. Here’s an excerpt:

The Trump administration has claimed that no one has died because of its cuts to humanitarian aid…Yet what I find here in desperate villages in southwestern Uganda is that not only are aid cuts killing children every day, but that the death toll is accelerating.

Stockpiles of food and medicine are running out here. Village health workers who used to provide inexpensive preventive care have been laid off. Public health initiatives like deworming and vitamin A distribution have collapsed. Immunizations are being missed. Contraception is harder to get. Ordinary people are growing weaker, hungrier and more fragile. So as months pass, the crisis is not easing but growing increasingly lethal — and because children are particularly vulnerable, they are often the first to starve and the first to die… credible estimates by experts suggest that the child death toll may be in the hundreds of thousands this year alone — and likely an even higher number next year.

A June 3 State Department memo, headed “sensitive but unclassified,” saying that the shutdown of the U.S. Agency for International Development will cost taxpayers $6.4 billion over two years… the money is necessary to manage “litigation, claims, residual payments and closeout activities.”..

A recent study published in The Lancet estimated that the cuts will cost the lives of about 690,000 children under the age of 5 in 2025, and 829,000 next year. The study estimated that some 3.1 million children under age 5 would die during Trump’s second term because of his cuts in humanitarian assistance...

PEPFAR, founded by President George W. Bush with the strong backing of America’s evangelical Christians. It turned the tide of AIDS and has saved 26 million lives — but the Trump administration has withheld some of its funding…About 65 percent of PEPFAR awards have been canceled…

Yet it’s also true that there are hints that the Trump administration is beginning to find some footing on aid. It has begun to place new orders for R.U.T.F. and has plans to move these stockpiles. It is preparing to hand over its food aid stockpiles to U.N. agencies to distribute to those in need. And it announced this month that PEPFAR will distribute lenacapavir, an important new drug that prevents AIDS transmission, in at least eight countries next year. These are real and positive steps; they just don’t make up for the larger pattern of chaos and cutbacks…

Related blog posts:

Huntingdon Lake, Sandy Springs GA

High Frequency of Asymptomatic Perianal Crohn’s Disease at Diagnosis

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M Antaya et al. AJG; DOI: 10.14309/ajg.0000000000003733 (ahead of print); The impact of integrating pelvic MRI at diagnosis on early detection of perianal Crohn’s disease in pediatrics

Methods: “Patients [n=139] were prospectively enrolled into the Edmonton Pediatric Inflammatory Bowel Disease Clinic (EPIC) registry (baseline pelvic MR since 2018). A retrospective review (2018-2023) was performed.”

Key findings:

  • Nearly 1 in 3 (31%) newly diagnosed pediatric CD patients had perianal CD identified on pelvic MRI
  • Overall, 19% (n=27/139) had subclinical perianal disease (MR+/ asymptomatic (ASx)).
  • For patients who were both asymptomatic and had a normal perianal exam (n=86/139, 62%), their subclinical perianal disease rate was similar at 20% (n=17/86)
  • One in ten pediatric CD patients needed perianal surgery within the first 6 years post-diagnosis
  • MR+/ASx also had higher rates and faster time to perianal surgery than MR-/ASx (p=0.02)
  • Perianal side branch fistula was a predictor of surgery (OR 107.6, [95% CI 16.9-2178] p<0.0001)
  • In this study from Canada, 78% (n=108/139) were receiving biologic therapy at one year following diagnosis. However, only 51% (n=71/139) received biologic therapy as initial maintenance therapy

In their discussion, the authors indicate that pelvic MRI “enables identification of patients who may benefit from earlier biologic therapy (particularly anti-TNF) and closer monitoring despite being asymptomatic, given they have an increased risk of perianal surgery.” They note potential concerns for cost-effectiveness but note routine MRI may reduce future hospitalizations and surgery.

My take: In patients who will receive early biologic therapy, it is not likely that routine MRI will result in any cost savings. However, in settings without significant resource constraints, understanding the extent of disease is still desirable for later comparison.

Related blog posts:

“Tasty & Healthy” Whole Food Diet For Crohn’s Disease

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Y Frutkoff et al. Gastroenterology 2025 (Article in Press). Open Access! Whole Food Diet Induces Remission in Children and Young Adults With Mild to Moderate Crohn’s Disease and Is More Tolerable Than Exclusive Enteral Nutrition: A Randomized Controlled Trial

Yesterday’s post (“A Practical Guide to Diet and IBD” (2025)) provided a summary of data on a multitude of diets for inflammatory bowel disease. Today’s post describes a study on a new diet, called the Tasty & Healthy diet.

Background: Tasty & Healthy (T&H) is a whole food diet for Crohn’s disease (CD) that excludes processed food, gluten, red meat, and dairy, without requiring formula or mandatory ingredients.

Tasty & Healthy (T&H) is an exclusive whole food diet, first published in a charity cookbook in 2014… The T&H diet was developed to reduce proinflammatory dietary exposures by excluding gluten, animal fat (ie, red meat and dairy, except for plain yogurt), as well as all processed food (anything that comes in a package except for those with 1 unprocessed ingredient.” (see details and supportive references in Supplementary Appendix 1).

Methods: TASTI-MM was a clinician-blinded, randomized controlled trial comparing tolerability and effectiveness of T&H (n=41) vs exclusive enteral nutrition (EEN, n=42). The intention to treat analysis included 83 patients (mean age 14.5 yrs, range 7-25 yrs).

Key findings:

  • 88% tolerated T&H vs 52% for EEN. 59% of the patients in the EEN arm did not complete the 8-week follow-up period, compared with only 15% in the T&H arm
  • Calprotectin, C-reactive protein, and erythrocyte sedimentation rate decreased significantly in both groups, with no between-group differences
  • Symptomatic remission was achieved in 56% of the T&H group vs 38% of the EEN group
  •  Calprotectin <250 μg/g was achieved in 34% T&H vs 33% of the EEN group
  • Microbiome α-diversity improved in the T&H arm and declined in the EEN arm, showing superior species richness at both week 4 and week 8. Species associated with bowel inflammation, such as Ruminococcus gnavus, decreased in T&H and increased in EEN (q < .001)

Discussion Points:

“In multiple studies CDED has been found to induce symptomatic remission in 62%–77% of patients with mild to moderate uncomplicated CD, including biologic remission in a subset of patients. Although conceptually similar to CDED in the exclusion of proinflammatory food
groups, the T&H diet differs in structure—requiring no formula and no mandatory components, thus offering greater dietary flexibility.”

“The T&H diet was tested across multiple international centers, while still achieving similar outcomes compared with EEN. The use of any exclusion diet requires guidance of a dietitian to ensure balanced nutrition, and this becomes even more important in diets when formula is not needed. Other exclusive whole food diets studied in the RCT setting are the Specific Carbohydrate Diet and Mediterranean diet, which were effective in inducing symptomatic remission, but demonstrated insufficient biologic remission rates.”

“In the past, dietary interventions have not been as widely adopted in adults as in children…Although EEN use has been hampered by the thought that adults will not tolerate nutritional interventions, the advent of whole food diets has changed that notion…In this study, we found that not only were the included adults adherent to the T&H diet, it was as effective as in children and treatment response was not associated with age.”

Related article: Plotkin L, Aharoni Y, Fenster D, et al. Tasty & Healthy is a
dietary approach for inducing and maintaining remission in Crohn’s disease: a prospective case series. United European Gastroenterol J 2021;9:521 (PO431).

My take: This “Tasty & Healthy” Diet appears to be an effective option for induction of remission for mild to moderate Crohn’s disease. Extended studies will be needed to help determine whether it could be used for longer duration in those with a response. Also, whoever labelled this diet initially clearly understands marketing as it sounds a lot better than EEN or CDED.

Related blog posts:

Disclaimer: This blog, gutsandgrowth, assumes no responsibility for any use or operation of any method, product, instruction, concept or idea contained in the material herein or for any injury or damage to persons or property (whether products liability, negligence or otherwise) resulting from such use or operation. These blog posts are for educational purposes only. Specific dosing of medications (along with potential adverse effects) should be confirmed by prescribing physician.  Because of rapid advances in the medical sciences, the gutsandgrowth blog cautions that independent verification should be made of diagnosis and drug dosages. The reader is solely responsible for the conduct of any suggested test or procedure.  This content is not a substitute for medical advice, diagnosis or treatment provided by a qualified healthcare provider. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a condition

“A Practical Guide to Diet and IBD” (2025)

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EJ Figueroa et al. Am J Gastroenterol 2025;120:1941–1945. A Practical Guide to Diet and IBD

Background: “A growing body of evidence suggests that dietary intake may play a role in the pathogenesis and perpetuation of IBD-associated inflammation. Human and animal-based studies have identified various dietary components, such as meat and artificial
food additives, associated with intestinal inflammation.”

“Despite the interest of patients in dietary therapy, robust data surrounding the potential harms and benefits are limited (1). Patients often attribute symptoms of IBD to their dietary intake and will avoid foods they perceive as triggers. Overly restrictive diets can lead to decreased food-related quality of life, malnutrition, or micronutrient deficiencies.”

Key points:

  • “For patients seeking general guidance, we recommend avoiding ultra-processed foods, artificial thickeners, and sweeteners and trying to adhere to a predominantly plant-based diet focusing on fruits and vegetables, with moderate amounts of lean proteins, and for patients with UC, reduced amounts of red meat.”
  • For Crohn’s disease: “the highest quality evidence supporting dietary management of IBD is for EEN and PEN in mild-to-moderate CD.”
  • “For patients seeking specific guidance, …there is good evidence for the use of EEN and
    PEN with CDED for induction of remission in Crohn’s disease…short-duration use of EEN/PEN can be offered to patients with medically refractory disease who require a bridge to their next advanced therapy.”
  • For Crohn’s disease: “Dietary strategies using whole food alone can improve gastrointestinal symptoms but have not definitively demonstrated successful control of inflammation. Their use is generally recommended for patients with mild-to-moderate symptoms.”
  • For Ulcerative Colitis: “There remains insufficient evidence to support the use of dietary approaches in the management of UC, but some evidence suggests a diet high in fiber and low in fat may be of benefit.”

Table 1 provides a good summary:

Other points:

Formula for EEN: “A Cochrane meta-analysis found no difference in efficacy between polymeric or elemental EEN formulations…Because of lower cost and better palatability, polymeric formulas are most often used in clinical practice.”

SCD Diet vs Mediterranean:”Iin a randomized superiority trial that compared 6 weeks of the SCD with a Mediterranean diet in adults with Crohn’s disease with mild-to-moderate symptoms, the SCD was not found to be superior to the Mediterranean diet (14). After 6 weeks of therapy, less than half the participants (46.5% on SCD and 43.5% on the
Mediterranean diet) were in clinical remission, and neither diet resulted in normalization of C-reactive protein concentration for most patients.”

My take: This article provides a good summary of the current evidence supporting the role of dietary treatment for IBD. In patients interested in specific diets, the assistance of a nutritionist/dietician is very important.

Related blog posts:

Pediatric Guidelines for Ulcerative Colitis (Part 2: Acute Severe Colitis)

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With regard to yesterday’s post (Pediatric Guidelines for Ulcerative Colitis (Part 1)), the use of combination therapy with thiopurines is frequently avoided in the pediatric population in the U.S. due to safety concerns (eg. low risk of lymphoma). Anti-TNF monotherapy with pTDM appears to be a more common practice in the U.S. (Related blog post: Can Therapeutic Drug Monitoring with Monotherapy Achieve Similar Results to Combination IBD Therapy?). These pediatric guidelines with regard to combination therapy are similar to recent ACG guidelines for adults (D Rubin et al. The American Journal of Gastroenterology 120(6):p 1187-1224, June 2025. Open Access! ACG Clinical Guideline Update: Ulcerative Colitis in Adults).

————

A Assa et al. JPGN 2025; 81:816–85. Open Access! Management of paediatric ulcerative colitis, part 2: Acute severe colitis—An updated evidence-based consensus guideline from the European Society of Paediatric Gastroenterology, Hepatology and Nutrition and the European Crohn’s and Colitis Organization

Comprehensive review (69 pages!) of all the topics related to acute severe colitis are covered. Topics include associated enteric infections (C diff, CMV), toxic megacolon, antibiotics, pain management, VTE, surgery, and pouchitis.

Some of the recommendations:

  • All mesalamine preparations (oral and rectal) should be discontinued upon admission to exclude mesalamine intolerance, especially when mesalamine has been commenced during the preceding few weeks; (re-) introduction should be considered after significant improvement in the clinical condition [EL5, adults EL5] (*100% agreement).
  • Regular diet should be continued in most ASC cases [not in toxic megacolon]. Enteral nutrition may be used if oral feeding is not tolerated or in malnourished children [EL4, adults EL1] (*100% agreement).
  • Pharmacological thromboprophylaxis for reducing the risk of VTE should be considered in all inpatient children with ASC (Figure 1) [EL5, adults EL2] (*100% agreement).
  • Intravenous methylprednisolone 1 mg/kg/day (up to 40 mg/day) once daily is the first-line treatment in ASC and should be promptly started [EL2, adults EL1]. A higher dose of 1.5 mg/kg/day (up to 60 mg/day) can be used at the clinician’s discretion (e.g., in patients on oral corticosteroids at admission and/or with a more severe spectrum of ASC) [EL4, adults EL4] (*100% agreement).
  • Intravenous methylprednisolone should not be extended beyond 7–10 days of total course, since it carries no additional benefit and increases toxicity. In corticosteroid-refractory patients in whom second-line therapy is initiated, there is no need for corticosteroid tapering if corticosteroids are given as an isolated short course (up to 10 days) (*100% agreement).
  • A PUCAI > 45 on the 3rd day of IVCS treatment should dictate planning for second-line therapy between Days 3–5 [EL2, adults EL2] (*100% agreement).
  • Second-line therapy should be initiated on the 5th day of IVCS treatment in children with a PUCAI ≥ 65 [EL2, adults EL2] (*100% agreement).
  • Infliximab is recommended as the preferred second-line medical therapy for anti-TNF naive children failing IVCS [EL3, adults EL1] (*100% agreement).
  • To reduce unnecessary immunosuppression, corticosteroids (when ineffective) should be rapidly weaned following introduction of second-line therapy or decision to proceed to colectomy (stopped if in use ≤10 days and reduced to prednisone ≤0.2 mg/kg or equivalent to 10 mg adult dose with gradual tapering thereafter if >10 days) [EL5, adults EL5] (*100% agreement).
  • Third-line sequential rescue therapies (CNIs after infliximab, infliximab after CNI or a JAK inhibitor after either) may be considered in stable patients, in specialised centres and in those whose corticosteroids were weaned off or nearly weaned off as stated above [EL5, adults EL2] (*100% agreement).

Related blog posts:

Disclaimer: This blog, gutsandgrowth, assumes no responsibility for any use or operation of any method, product, instruction, concept or idea contained in the material herein or for any injury or damage to persons or property (whether products liability, negligence or otherwise) resulting from such use or operation. These blog posts are for educational purposes only. Specific dosing of medications (along with potential adverse effects) should be confirmed by prescribing physician.  Because of rapid advances in the medical sciences, the gutsandgrowth blog cautions that independent verification should be made of diagnosis and drug dosages. The reader is solely responsible for the conduct of any suggested test or procedure.  This content is not a substitute for medical advice, diagnosis or treatment provided by a qualified healthcare provider. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a condition.

Pediatric Guidelines for Ulcerative Colitis (Part 1)

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E Wine et al. JPGN 2025;81:765–815. Open Access! Management of paediatric ulcerative colitis, part 1: Ambulatory care—An updated evidence-based consensus guideline from the European Society of Paediatric Gastroenterology, Hepatology and Nutrition and the European Crohn’s and Colitis Organisation

This is the first of two highly-detailed papers. (This is a 50 page report.) it has extensive/comprehensive recommendations and information on all aspects of UC management, except acute severe colitis which is covered tomorrow.

Here are some of the recommendations:

  • Thiopurines are recommended for maintaining remission in children who, despite optimal 5-ASA treatment, are corticosteroid-dependent or have frequent relapses (≥2 relapses per year) or in 5-ASA-intolerant patients; thiopurines should be considered following discharge from ASC episodes (EL4, adults EL3) (Agreement 100%).
  • Infliximab should be considered, preferably in combination with an IMM, as the first-line biologic agent in chronically active or corticosteroid-dependent UC, uncontrolled by 5-ASA, and in most cases also thiopurines, for both induction and maintenance of remission [EL1, adults EL1] (Agreement 96%).

It is worth noting that anti-TNF monotherapy with pTDM is common practice in the U.S. due to concerns about the safety of combined therapy with a thiopurine (Related blog post: Can Therapeutic Drug Monitoring with Monotherapy Achieve Similar Results to Combination IBD Therapy?). These pediatric guidelines with regard to combination therapy are similar to recent ACG guidelines for adults (D Rubin et al. The American Journal of Gastroenterology 120(6):p 1187-1224, June 2025. Open Access! ACG Clinical Guideline Update: Ulcerative Colitis in Adults).

  • Infliximab is recommended to be used preferably in combination with an IMM (with the most evidence in UC being for thiopurines) to reduce the likelihood of developing antibodies to infliximab (ATIs) and in thiopurine-naïve patients, to enhance effectiveness. Methotrexate may also be used to mitigate ATIs. For immunogenicity prevention, lower doses of azathioprine (1–1.5 mg/kg) may be used. Data on methotrexate dose in this setting are scarce, but low total doses of 7.5–12.5 mg weekly are reported. Proactive TDM is recommended, particularly when infliximab is prescribed as monotherapy (Agreement 96%).
  • In most cases, higher doses of infliximab (e.g., 10 mg/kg/dose at Weeks 0, 2 and 6, followed by 10 mg/kg every 4–8 weeks for maintenance) are required to provide the best chance of reaching the desired clinical and endoscopic outcome. The dose can be subsequently reduced, guided by TDM. Lower dosing (5 mg/kg) can be used in less severe cases. In cases in which IV infliximab treatment is switched to subcutaneous injections, the recommended dosing schedule (established only for >40 kg) is 120 mg every 2 weeks. See Table 2 for dosing details (Agreement 100%).
  • Proactive TDM is recommended for both infliximab and adalimumab, particularly at the end of induction (before the 4th infliximab infusion and after 3 adalimumab injections) [EL4] (Agreement 100%).

Cancer Surveillance:

  • 1. Children with UC aged 12 years and over with a disease duration of greater than 8 years should be considered for surveillance for CRC and dysplasia [EL4, Adults EL1] (Agreement 96%).
  • 2. Children with UC and PSC should be considered for surveillance for CRC and dysplasia starting at age 12, regardless of disease duration [EL4, Adults EL3] (Agreement 100%).

My take: The referenced paper in today’s post and tomorrow’s are essentially updated published book chapters with specific management recommendations. There are likely some practice variations but overall the recommendations will help garner support for current practices like optimizing infliximab dosing and using proactive TDM.

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Tuberculosis: #1 Infectious Disease Killer

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Followup on previous blog post (Mary Suhr: Coding Update 2025) -there is a new CPT code for the PENFS procedure in 2026: 64567. This procedure has FDA approval for children/adolescents (8-21 years) with functional abdominal pain associated with irritable bowel syndrome; in addition, it has an indication for functional dyspepsia.

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From NPR 9/11/25: TB is the #1 killer among infectious diseases. A new study says its toll could mount

An excerpt:

While it may seem like a disease from the past, this airborne illness kills more people than any other infectious disease worldwide, roughly 1.2 million a year. That number could increase dramatically because of the Trump administration’s cuts to foreign assistance, according to a new study…

As many as 10 million additional people could get TB, and 2.2 million could die by 2030 in high-burden countries under the worst-case funding scenario over the next five years, researchers report in the journal PLOS Global Public Health. 

My take: I recently finished, Everything is Tuberculosis by John Green, which is a good read. So this article caught my attention. Even before the funding cuts, more effort was needed to stop the scourge of TB. Currently TB kills more than a million people per year; in some historic periods, it has killed as many as one in seven people.

Thanks to Anna Kelly for recommending the book to me.

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