Genotypic and phenotypic features of 39 Chinese patients with glycogen storage diseases type I, VI, and IX.

Glycogen storage diseases (GSDs) are abnormally inherited glycogen metabolism mainly affecting the liver, muscles, and heart. Deficiency of proteins involved in glycogen metabolism caused by genetic mutations are responsible for different subtype of GSDs. However, there are still some challenges in diagnosing GSD. This study includes 39 suspected GSDs patients from unrelated families in China. Next-generation sequencing (NGS) was used to investigate the reason for their diseases at the genetic level. Finally, all 39 patients were diagnosed with GSDs, including 20 GSD-Ia, 4 GSD-VI, and 15 GSD IX (12 GSD-IXa patients and 3 GSD-IXb patients). Thirty-two mutations in G6PC1, PYGL, PHKA2, and PHKB genes were identified, with 14 of them being novel variants. The pathogenicity of novel variants was classified according to ACMG guildlines and predicted by in slico algorithms. Mutations p.L216L and p.R83H in G6PC1 gene may be the hot spot mutation in Chinese. Hearing impairment is a rare clinical feature of GSD Ia, which has also been observed in our cohort. The severity of GSD VI and IX was indicated by our patients. Close follow-up should be applied to GSD VI and IX patients. Our findings provided evidence for building the phenotype-genotype of GSDs and expanded the mutation spectrum of related genes.

[Clinical analysis of endoscopic esophageal dilation for the treatment of corrosive esophageal strictures in children]. / å† é•œä¸‹é£Ÿç®¡æ‰©å¼ æ²»ç–—å„¿ç«¥è èš€æ€§é£Ÿç®¡ç‹­çª„çš„ä¸´åºŠåˆ†æž.

OBJECTIVES: To investigate the clinical application of endoscopic esophageal dilation in the treatment of corrosive esophageal strictures in children. METHODS: A retrospective analysis was performed on the clinical data of 15 children with corrosive esophageal strictures who underwent endoscopic esophageal dilation in Children's Hospital, Zhejiang University School of Medicine. The clinical features, treatment modality of endoscopic esophageal dilation, number of dilations, complications, and prognosis were reviewed. RESULTS: A total of 96 esophageal dilations were performed in the 15 children with corrosive esophageal strictures, with a median of 6 dilations per child. Among them, 9 children (60%) underwent 6 or more dilations. The children with a stricture length of >3 cm had a significantly higher number of dilations than those with a stricture length of ≤3 cm (P<0.05). The children with strictures in a single segment had a significantly better treatment outcome than those with strictures in multiple segments (P=0.005). No complication was observed during all sessions of dilation. The overall effective rate (including significant improvement and improvement) of endoscopic esophageal dilation treatment was 87%, with 2 cases of failure. CONCLUSIONS: Endoscopic esophageal dilation is an effective and relatively safe treatment method for corrosive esophageal strictures in children, and children with strictures in a single segment tend to have a better treatment outcome than those with strictures in multiple segments.

Poor Concordance Between Clinical Activity and Endoscopic Severity in Pediatric Crohn's Disease: Before and After Induction Therapy.

OBJECTIVES AND STUDY: Endoscopic assessments of disease activity are important to diagnose and evaluate treatment responses in patients with Crohn's disease (CD). However, the invasiveness of endoscopy limits the application of this technique in routine examination. Thus, interest has been increasing in identifying noninvasive surrogate markers to predict endoscopic CD activity. METHODS: We retrospectively analyzed pediatric patients with new-onset CD from January 2013 to December 2018 at Zhejiang University Affiliated Children's Hospital. The disease severity was scored according to the Crohn's Disease Endoscopic Index of Severity (CDEIS). Routine blood tests were determined individually. Clinical activity was assessed based on the Pediatric Crohn's Disease Activity Index (PCDAI). RESULTS: A total of 91 patients with CD had undergone one or more ileocolonoscopies (n = 146), the mean CDEIS for all the pediatric patients with CD was 7.0 (95% CI 5.7-8.2), and the mean PCDAI was 20.9 (95% CI 18.3-23.5). Pearson's linear analysis of the CDEIS and PCDAI in pediatric patients with CD showed a moderate correlation (r = 0.508, P < 0.001). Weak correlations were found between the PCDAI and CDEIS at the first diagnosis (r = 0.408, P < 0.001) and after completing induction therapy (r = 0.286, P < 0.05). Routine blood tests also did not correlate well with the CDEIS. CONCLUSIONS: This study identified weak correlations between the PCDAI and CDEIS in assessing pediatric patients with CD severity both at first diagnosis and after induction therapy. A comprehensive assessment of PCDAI, CDEIS and multiple laboratory factors should be performed at diagnosis and during the follow-up of patients with CD.

Recurrent abdominal pain and vomiting with elevated triglyceride and positive antinuclear antibody in a girl aged 12 years. / 12å²å¥³å­©åå¤è ¹ç—›ã€å‘•åä¼´ä¸‰é °ç”˜æ²¹å‡é«˜ã€æŠ—æ ¸æŠ—ä½“é˜³æ€§.

A girl aged 12 years and 2 months presented with recurrent abdominal pain and vomiting for more than 2 years and arthrodynia for 3 months. She was diagnosed with recurrent acute pancreatitis with unknown causes and had been admitted multiple times. Laboratory tests showed recurrent significant increases in fasting serum triglyceride, with elevated immunoglobulin and positive antinuclear antibody. The girl was improved after symptomatic supportive treatment. The girl developed arthrodynia with movement disorders 3 months before, and proteinuria, hematuria, and positive anti-double-stranded DNA antibody were observed. The renal biopsy was performed, and the pathological examination and immunofluorescence assay suggested diffuse lupus nephritis (type Ⅳ). She was finally diagnosed with systemic lupus erythematosus (SLE), lupus nephritis (type Ⅳ), and recurrent acute pancreatitis. Pancreatitis was suspected to be highly associated with SLE. She was treated with oral hydroxychloroquine sulfate and intravenous methylprednisolone sodium succinate and cyclophosphamide. Arthrodynia was partially relieved. She was then switched to oral prednisone acetate tablets. Intravenous cyclophosphamide and pump infusion of belimumab were regularly administered. Now she had improvement in arthrodynia and still presented with proteinuria and hematuria. It is concluded that recurrent acute pancreatitis may be the first clinical presentation of SLE. For pancreatitis with unknown causes, related immunological parameters should be tested, and symptoms of the other systems should be closely monitored to avoid delaying the diagnosis.

Synergism of rMV-Hu191 with cisplatin to treat gastric cancer by acid sphingomyelinase-mediated apoptosis requiring integrity of lipid raft microdomains.

BACKGROUND: DDP-based chemotherapy is one of the first-line treatment in GC. However, the therapeutic efficacy of DDP is limited due to side effects. Therefore, it is of great significance to develop novel adjuvants to synergize with DDP. We had demonstrated previously that rMV-Hu191 had antitumor activity in GC. Here we examined the synergism of rMV-Hu191 with DDP in vitro and in vivo. METHODS: Cellular proliferation, the synergistic effect and cell apoptosis were evaluated by CCK-8 assay, ZIP analysis and flow cytometry, respectively. The protein levels and location of ASMase were monitored by western blot and immunofluorescence assay. shRNA and imipramine were used to regulate the expression and activity of ASMase. MßCD was administrated to disrupt lipid rafts. Mice bearing GC xenografts were used to confirm the synergism in vivo. RESULTS: From our data, combinational therapy demonstrated synergistic cytotoxicity both in resistant GC cell lines from a Chinese patient and drug-nonresistant GC cell lines, and increased cell apoptosis, instead of viral replication. Integrity of lipid rafts and ASMase were required for rMV-Hu191- and combination-induced apoptosis. The ASMase was delivered to the lipid raft microdomains at the initial stage of rMV-Hu191 treatment. In vivo GC mice xenografts confirmed the synergism of combinational treatment, together with increased apoptosis and trivial side-effects. CONCLUSIONS: This is the first study to demonstrate that rMV-Hu191 combined with DDP could be used as a potential therapeutic strategy in GC treatment and the ASMase and the integrity of lipid rafts are required for the synergistic effects.

Infliximab Therapy in Very Early Onset Crohn's Disease: Real-World Experience in China.

BACKGROUND: Data concerning of the effectiveness of infliximab in very early onset Crohn's disease patients are rare. AIM: To assess the effectiveness and safety issues of infliximab treatment for this rare cohort. METHODS: The pediatric Crohn's disease activity index, Crohn's disease endoscopic index score, height, and weight were retrospectively recorded at baseline, week 14, and week 54. The rates of clinical remission and mucosal healing and growth of patients were compared between patients younger and older than 6 years of age. Loss of response or non-response to infliximab and adverse events were assessed during the entire treatment period. RESULTS: Sixty-five patients were enrolled in the study. Sixty-four percent and 40.0% of very early onset Crohn's disease patients achieved clinical remission and mucosal healing after induction therapy. Adjusted for the covariances, very early disease onset had no association with primary non-response (p = 0.360) or mucosal healing (p = 0.361). Early disease onset was associated with discontinuation of infliximab due to adverse events (hazard ratio [HR] 7.15, 95% CI 1.73-29.51, p = 0.006). Patients < 6 years had lower body mass index for age z score improvement during the induction phase (p = 0.04). CONCLUSIONS: Very early onset Crohn's disease patients had similar non-response rates and mucosal healing rates as those who were 6 years or older during induction therapy. Greater discontinuation of infliximab due to adverse events was observed in very early onset Crohn's disease patients.

60-nt DNA Direct Detection without Pretreatment by Surface-Enhanced Raman Scattering with Polycationic Modified Ag Microcrystal Derived from AgCl Cube.

Direct detection of long-strand DNA by surface-enhanced Raman scattering (SERS) is a valuable method for diagnosis of hereditary diseases, but it is currently limited to less than 25-nt DNA strand in pure water, which makes this approach unsuitable for many real-life applications. Here, we report a 60-nt DNA label-free detection strategy without pretreatment by SERS with polyquaternium-modified Ag microcrystals derived from an AgCl cube. Through the reduction-induced decomposition, the size of the about 3 × 3 × 3 µm3 AgCl cube is reduced to Ag, and the surface is distributed with the uniform size of 63 nm silver nanoparticles, providing a large area of a robust and highly electromagnetic enhancement region. The modified polycationic molecule enhances the non-specific electrostatic interaction with the phosphate group, thereby anchoring DNA strands firmly to the SERS enhanced region intactly. As a result, the single-base recognition ability of this strategy reaches 60-nt and is successfully applied to detect thalassemia-related mutation genes.

DGAT1 mutations leading to delayed chronic diarrhoea: a case report.

BACKGROUND: Early-onset chronic diarrhoea often indicates a congenital disorder. Mutation in diacylglycerol o-acyltransferase 1 (DGAT1) has recently been linked to early-onset chronic diarrhoea. To date, only a few cases of DGAT1 deficiency have been reported. Diarrhoea in those cases was severe and developed in the neonatal period or within 2 months after birth. CASE PRESENTATION: Here, we report a female patient with DGAT1 mutations with delayed-onset chronic diarrhoea. The patient had vomiting, hypoalbuminemia, hypertriglyceridemia, and failure to thrive at early infancy. Her intractable chronic diarrhoea occurred until she was 8 months of age. A compound heterozygous DGAT1 mutation was found in the patient, which was first found in the Chinese population. Her symptoms and nutrition status improved after nutritional therapy, including a fat restriction diet. CONCLUSIONS: This case expanded our knowledge of the clinical features of patients with DGAT1 mutations. Intractable diarrhoea with delayed onset could also be a congenital disorder.

[Inflammatory bowel disease with growth hormone deficiency in adolescents: an analysis of 4 cases and literature review].

Inflammatory bowel disease (IBD) is a chronic recurrent non-specific inflammatory disease in the intestinal tract. About 10%-56% of children with Crohn's disease and about 10% of children with ulcerative colitis have growth retardation. This study reports four adolescents with IBD and growth hormone deficiency who were diagnosed with Crohn's disease. There were three boys and one girl, with an age of 11.0-13.9 years and a disease duration of 11-85 months at diagnosis. The four patients had the involvement of the small intestine only, the colon only, both the small intestine and the upper gastrointestinal tract, and both the small intestine and the colon respectively. The pediatric Crohn's disease activity index ranged from 27.5 to 45 points. All four patients had a height-for-age Z-score (HAZ) of <-2, and the growth hormone provocative test suggested growth hormone deficiency. Of all four patients, two received recombinant human growth hormone combined with infliximab, one received infliximab only, and one received recombinant human growth hormone combined with mercaptopurine. All four patients had an improvement in HAZ after treatment.

A case of Metaplastic atrophic gastritis in immune Dysregulation, Polyendocrinopathy, Enteropathy, X-linked (IPEX) syndrome.

BACKGROUND: Autoimmune metaplastic atrophic gastritis is a chronic progressive inflammatory condition. The clinical spectrum includes pernicious anemia, atrophic gastritis, antibodies to parietal cell antigens and intrinsic factor, achlorhydria, hypergastrinemia and carcinoma. It is rare in paediatric cohorts. CASE PRESENTATION: We present the case of a boy with metaplastic atrophic gastritis in whom immune dysregulation, polyendocrinopathy, enteropathy, X-linked(IPEX) syndrome was confirmed by FOXP3 gene mutation. The patient was referred to the hospital at the age of 3 years with recurrent emesis, diarrhoea and malnutrition. His elder brother died at 9 years of age from acute respiratory distress syndrome and renal tubular acidosis. The patient was allergic to cow milk formula and noodles. Oesophagegastroduodenoscopy revealed redness, erosion and edema throughout the stomach; whitish granules in the duodenal bulb; and edema in the second part of the duodenum. Biopsies showed extensive villous atrophy and goblet cell depletion in the duodenum. He was diagnosed with type-1 diabetes mellitus (T1DM) during the treatment of methylprednisolone. Serum antibodies against glutamic acid decarboxylase and pancreatic islets were detected. The patient's FOXP3 gene was sequenced; this identified that the patient was hemizygous for a pathogenic variant [NM_014009.3:c.748_750del (p.Lys250del)]. CONCLUSION: Metaplastic atrophic gastritis is rarely reported in patients with IPEX. Clinical gastroenterologists should be aware of IPEX syndrome when facing the complex syndromes of metaplastic atrophic gastritis and endocrinopathy.

[Clinical features and prognosis of gastrointestinal injury due to foreign bodies in the upper gastrointestinal tract in children: a retrospective analysis of 217 cases].

OBJECTIVE: To study the clinical features and prognosis of gastrointestinal injury caused by foreign bodies in the upper gastrointestinal tract in children. METHODS: A retrospective analysis was performed for the clinical data of 217 children who were diagnosed with foreign bodies in the upper gastrointestinal tract complicated by gastrointestinal injury by gastroscopy from January 2011 to December 2016, including clinical features, gastroscopic findings, complications, and prognosis. RESULTS: Among the 217 children, 114 (52.5%) were aged 1-3 years. The most common foreign body was coin (99/217, 45.6%), followed by hard/sharp-edged food (45/217, 20.7%) and metal (35/217, 16.1%). The most common gastrointestinal mucosal injury was ulceration (43.8%), followed by erosion (33.2%). Compared with other foreign bodies, button cells were significantly more likely to cause esophageal perforation (P<0.01). The esophagus was the most commonly injured organ (207/217, 95.4%). Of all the 217 children, 24 (11.1%) experienced infection. The children with perforation caused by foreign bodies had a significantly higher incidence rate of infection than those with ulceration caused by foreign bodies (P=0.003). Of all the 217 children, 204 (94.0%) underwent successful endoscopic removal of foreign bodies. Among these children, 98 were hospitalized due to severe mucosal injury and were given anti-infective therapy, antacids, and supportive care including enteral nutrition through a nasogastric tube and/or parenteral nutrition. Of all the children, 10 left the hospital and were lost to follow-up, and all the other children were improved and discharged. CONCLUSIONS: Most cases of foreign bodies in the upper gastrointestinal tract occur at 1-3 years of age. Coin, hard/sharp-edged food, and metal are the most common foreign bodies. Button cells are more likely to cause esophageal perforation. The incidence rate of secondary infection increases with the increasing severity of gastrointestinal mucosal injury. Children undergoing endoscopic removal of foreign bodies and enteral nutrition through a nasogastric tube tend to have a good prognosis.

[Timing of nasojejunal feeding tube placement and enteral nutrition in children with acute pancreatitis].

OBJECTIVE: To investigate the impact of timing of nasojejunal feeding tube placement and enteral nutrition on clinical outcomes in children with acute pancreatitis. METHODS: A retrospective analysis was performed on the clinical data of 31 children with acute pancreatitis, who received nasojejunal feeding between January 2008 and July 2013, to investigate the relationship of abdominal symptoms/signs and serum amylase level with the tolerability of catheterization and success rate of enteral nutrition. The treatment outcome and incidence of adverse reactions and complications were compared between the early enteral nutrition group ( ≤7 days from the onset of the disease) and late enteral nutrition group (>7 days from the onset of the disease). RESULTS: Abdominal symptoms/signs and serum amylase level were independent of the tolerable rate of catheterization and success rate of enteral nutrition. Compared with the late enteral nutrition group, the early enteral nutrition group had a shortened time to normal serum amylase level, significantly reduced incidence of systemic complications, length of hospital stay, and hospitalization expenses, and less weight gain. The tolerable rate of catheterization and success rate of enteral nutrition showed no significant difference between the two groups. Similarly, no significant differences were found in the increase in albumin level after enteral nutrition, duration of enteral nutrition, incidence of adverse reactions, and incidence of local complications. CONCLUSIONS: Abdominal symptoms/signs and serum amylase level cannot be used as a measure of whether nasojejunal feeding tube placement and enteral nutrition can be performed. Early enteral nutrition can better improve clinical outcomes in children with acute pancreatitis, and it is feasible.

The impact of exclusive enteral nutrition on the gut microbiome and bile acid metabolism in pediatric Crohn's disease.

BACKGROUND: Gut dysbiosis and associated bile acid (BA) metabolism play an important role in the pathogenesis of Crohn's disease (CD). We investigated the impacts of the exclusive enteral nutrition treatment (EEN) on the gut microbiome (GM) and BAs metabolism for patients with CD. METHODS: Targeted metabolomics analysis and metagenomics analysis were performed in feces to investigate the BA and GM changes of patients before and after 2-months EEN therapy. The Pediatric Crohn's Disease Activity Index (PCDAI) and fecal calprotectin were used to evaluate the severity and mucosal inflammation of CD. RESULTS: A total of 27 newly diagnosed pediatric patients with CD and 27 healthy controls were recruited in this study. Both GM structure and the secondary BA metabolism were significantly impaired in patients, which could return towards normal levels after EEN treatment. The most abundant taxa Firmicutes and 11 BAs were found closely associated with the PCDAI score and fecal calprotectin. Meanwhile, the close interactions between Firmicute bacteria and BAs might contribute to the remission of CD after EEN treatment. The qPCR data further confirmed that the relative expressions of Firmicutes phylum, and genus Flavonifractor and Clostridium V were improved after EEN treatment. CONCLUSIONS: Firmicutes bacteria and the balance of primary and secondary BA compositions in the gut were closely associated with the health status of CD disease indicated by the PCDAI score and fecal calprotectin. Understanding the recovery process of gut microbiome and BA metabolism will help us to explore the potential mechanisms of EEN therapy.

Maternal serum ferritin concentration is positively associated with newborn iron stores in women with low ferritin status in late pregnancy.

Iron deficiency (ID) is common in pregnant women and infants, particularly in developing countries. The relation between maternal and neonatal iron status remains unclear. This study considered the issue in a large sample of mother-newborn pairs in rural southeastern China. Hemoglobin (Hb) and serum ferritin (SF) were measured in 3702 pregnant women at ≥37 wk gestation and in cord blood of their infants born at term (37-42 wk gestation). Maternal anemia (Hb <110 g/L) was present in 27.5% and associated with maternal SF <20 µg/L in 86.9%. Only 5.6% of neonates were anemic (Hb <130 g/L) and 9.5% had cord-blood SF <75 µg/L. There were low-order correlations between maternal and newborn iron measures (r = 0.07-0.10 for both Hb and SF; P ≤ 0.0001 due to the large number). We excluded 430 neonates with suggestion of inflammation [cord SF >370 µg/L, n = 208 and/or C-reactive protein (CRP) >5 mg/L, n = 233]. Piecewise linear regression analyses identified a threshold for maternal SF at which cord-blood SF was affected. For maternal SF below the threshold of 13.6 µg/L (ß = 2.4; P = 0.001), cord SF was 0.17 SD lower than in neonates whose mothers had SF above the threshold (167 ± 75 vs. 179 ± 80 µg/L). The study confirmed that ID anemia remains common during pregnancy in rural southeastern China. Despite widespread maternal ID, however, iron nutrition seemed to meet fetal needs except when mothers were very iron deficient. The impact of somewhat lower cord SF on iron status later in infancy warrants further study.

Outcomes of Pediatric Patients with Crohn's Disease Received Infliximab or Exclusive Enteral Nutrition during Induction Remission.

Background: Both exclusive enteral nutrition (EEN) and infliximab (IFX) are recommended as induction therapy for pediatric Crohn's disease (CD). Our aim was to compare long-term disease outcomes of patients initially received with either IFX or EEN. Methods: Medical records of newly diagnosed, therapy naïve pediatric patients with CD received with IFX or EEN as induction therapy were retrospectively enrolled. Pediatric Crohn's disease activity index (PCDAI), Crohn's disease endoscopic index of severity (CDEIS), and other clinical data were compared pre- and postinduction therapy in two groups. The sustained remission rates and time coupled with body mass index (BMI) and height for age (HFA) changes were evaluated during more than 2-year long-term follow-up. Results: We collected data from 58 children with CD used IFX (23) or EEN (35) as induction remission therapy from January 2015 through June 2021 in our single-center. The median follow-up after starting IFX or EEN was 12.2 months (6.5-18.0months) and 18.9 months (7.1-30.7months), respectively. The proportion clinical and endoscopic remission in EEN (88.57% and 68.75%) was similar with that of IFX (73.91% and 80.77%) after induction therapy. No significant differences were also observed in BMI and HFA recovery between two groups. Among those who achieved clinical or endoscopic remission or endoscopic response, the sustained remission rates and time did not reveal any significant differences for those 10 patients who used 6-mercaptopurine/methotrexate (6-MP/MTX) or 14 patients who used IFX as maintenance treatment during longitudinal follow-up. Conclusions: Our study suggested that EEN treatment is similar with IFX therapy in short-term outcomes, and EEN+6-MP/MTX treatment is comparable with IFX+IFX therapy in long-term outcomes.

Diagnosis, treatment, and prevention of severe acute hepatitis of unknown etiology in children.

BACKGROUND: Severe acute hepatitis of unknown etiology in children has recently exhibited a global trend of concentrated occurrence. This review aimed to summarize the current available information regarding the outbreak of severe acute hepatitis and introduce our hospital's previous experiences with the diagnosis and treatment of severe acute hepatitis for reference. DATA SOURCES: Websites including the UK Health Security Agency, European Centre for Disease Prevention and Control, CDC, WHO, and databases including PubMed/Medline, Cochrane Library, Embase and Web of Science were searched for articles on severe acute hepatitis in children. RESULTS: As of May 26, 2022, a total of 650 cases have been reported in 33 countries; at least 38 (6%) children required liver transplantation, and nine (1%) died. Cases are predominantly aged between 3 and 5 years old, and there are no epidemiological links among them. The common manifestations are jaundice, vomiting and pale stools. Adenovirus tested positive in most cases, and SARS-CoV-2 and other viruses were detected in a few cases, but virus particles were not found in liver tissue. Adenovirus immunohistochemistry showed immunoreactivity in the intrasinusoidal lumen from some liver samples. The hierarchical treatment includes symptomatic and supportive therapy, management of coagulation disorders and hepatic encephalopathy, artificial liver support, and liver transplantation (approximately 6%-10% of cases require liver transplant). CONCLUSIONS: The etiology of this severe acute hepatitis in children is not clear. The clinical features are severe acute hepatitis with significantly elevated liver enzymes. Clinicians need to be alert to children with hepatitis.

Atypical late-onset severe gastritis in immune dysregulation, polyendocrinopathy, enteropathy, and X-linked (IPEX) syndrome: 2 case reports.

RATIONALE: The immune dysregulation, polyendocrinopathy, enteropathy, and X-linked (IPEX) syndrome is a rare disorder that most often manifests in the early stages of life. IPEX syndrome with a late onset, presenting with severe gastritis has rarely been reported. PATIENT CONCERNS: Two male adolescents presented with recurrent vomiting, severe malnutrition, and growth retardation due to severe gastritis. DIAGNOSES: Esophagogastroduodenoscopy of the 2 patients revealed rare presentations of severe gastritis with multiple ulcers and stenosis of the pylorus. Next-generation sequencing revealed 2 novel variants in gene FOXP3 in the patients who were diagnosed with the IPEX syndrome. INTERVENTIONS: Both patients were treated with a high calorie formular enteral nutritional therapy. In addition, the pylorus of patient 1 was enlarged by balloon dilation, while patient 2 was treated with mercaptopurine and low dose prednisone. OUTCOMES: Symptoms and nutritional status of the patients improved after treatment. LESSONS: Chronic severe gastritis with stenosis of the pylorus could be an atypical manifestation of the IPEX syndrome. The use of next-generation sequencing is highly suitable for the diagnosis of atypical IPEX syndromes.

Rotavirus and adenovirus infections in children during COVID-19 outbreak in Hangzhou, China.

BACKGROUND: This study aims to investigate the impact of protective measures and isolation on intestinal infection in children before and after COVID-19 outbreak in Hangzhou, China. METHODS: Data on outpatient visits, intestinal infection visits, and tests of adenovirus or rotavirus from electronic healthcare records were extracted in Children's Hospital of Zhejiang University School of Medicine during the COVID-19 outbreak (January-December, 2020), and be compared with those in 2019 during the same period. RESULTS: We found that pediatric outpatient visits, patients with intestinal infection and its proportion from January to December of 2020 were significantly less than that in the same period of 2019. Furthermore, the numbers of outpatient visits and patients with intestinal infection were the lowest in February and elevated slowly from March to December in 2020. We also found significantly decreased number of completed tests for intestinal viruses, positive cases of adenovirus and rotavirus, positive rate of rotavirus during January-December, 2020. The positive rates of adenovirus from March to September and December of 2020 were significantly lower than the levels of the same period in 2019. The positive rate of rotavirus and adenovirus in all age groups in 2020 is lower than the level of all age groups in 2019. CONCLUSIONS: The outpatient visits and intestinal, rotavirus and adenovirus infections in children significantly decreased during COVID-19 outbreak. Adequate protective measures and isolation in children may help to prevent intestinal virus infections in children.

Clinical and Genetic Spectra of Inherited Liver Disease in Children in China.

Background: Children presenting with chronic liver disease or acute liver failure often have an underlying genetic disorder. The aim of this study was to analyze the clinical and genetic spectra of inherited liver disease in children in a tertiary hospital. Methods: A total of 172 patients were classified into three groups according to their clinical presentation: cholestasis (Group A), liver enzyme elevation (Group B), and hepato/splenomegaly (Group C). Next-generation sequencing (NGS) was performed on all patients recruited in this study. The genotypic and phenotypic spectra of disease in these patients were reviewed. Results: The median age at enrollment of the 172 patients was 12.0 months (IQR: 4.9, 42.5 months), with 52.3% males and 47.7% females. The overall diagnostic rate was 55.8% (96/172) in this group. The diagnostic rates of whole-exome sequencing (WES) and targeted gene panel sequencing (TGPS) were 47.2% and 62.0%, respectively (no significant difference, p = 0.054). We identified 25 genes related to different phenotypes, including 46 novel disease-related pathogenic mutations. The diagnostic rates in the three groups were 46.0% (29/63), 48.6% (34/70), and 84.6% (33/39). ATP7B, SLC25A13, and G6PC were the top three genes related to monogenic liver disease in this study. Conclusion: WES and TGPS show similar diagnostic rates in the diagnosis of monogenic liver disease. NGS has an important role in the diagnosis of monogenetic liver disease and can provide more precise medical treatment and predict the prognosis of these diseases.