Table 1 Demographic and clinical features of CARMIL2-deficient patients.

From: Novel CARMIL2 loss-of-function variants are associated with pediatric inflammatory bowel disease

 

Patient 1

Patient 2

Patient 3

Patient 4

Demographics

Age at diagnosis

2 years

12 years

11 years

15 years

Gender

Male

Male

Female

Male

Consanguinity

Yes

Yes

No

Unknown

Parents origin (ethnicity/country)

Arab-Berber/Moroccan

Arab-Berber/Moroccan

Indigenous Canadian (mother), Israeli-Polish (father)

Unknown

Gastrointestinal disease

Family history of IBD

None

None

None

None

IBD (Paris classification of IBD)25

CD (A1aL2B1G1)

None

UC (A1bE4S1)

UC (A1bE4S1)

Symptoms at onset

Chronic diarrhea, ± blood and mucus, ± abdominal pain, failure to thrive

Abdominal pain, bloody diarrhea, weight loss

Abdominal pain, bloody diarrhea, fever, weight loss

EGD/IC

Normal/mild patchy loss of vascular pattern

Gastric erythema and superficial erosion of duodenal cap/Pancolitis with normal terminal ileum

Hyperemic esophagus, small ulcers and inflammation of stomach/Severe pancolitis with backwash ileitis

Pathology (upper/lower gastrointestinal tract)

Altered villous profile and atrophy, mild lymphomonocytic inflammation and epithelioid microgranulomas in duodenal bulb/Crypt distortion, mild lymphomonocytic inflammation, Paneth cell metaplasia and epithelioid granulomas of the colon

Mild increase of duodenal lamina propria mononuclear cells, moderate antritis with focal acute activity, moderate chronic body gastritis/Mild-moderately active IBD of entire colon, focal superficial acute terminal ileitis

Normal duodenum, mild chronic non-atrophic gastritis, mild esophagitis/ Chronic colitis with mild to moderate acute activity throughout all biopsies

Surgery

None

Colectomy, ileostomy, J pouch

Colectomy, ileostomy, J pouch

Other clinical features

Infections

Streptococcus pneumoniae pneumonia complicated by sepsis

Tinea corporis, prolonged upper respiratory tract infections

Intestinal leak with intraabdominal sepsis, pouchitis, pneumonia

Hepatic abscesses, C. difficile infection, abdominal abscess with enterocutaneous fistula

Endocrine disorders

None

Addison’s disease, Hashimoto thyroiditis

None

None

Skin

Eczema (first months)

Eczema

None

None

Others

Neuropsychiatric disorder (developmental delay and behavioral disorders)

Depressive disorder

Reactive airway disease

Unknown

Autoantibodies

Anti-thyroid Abs; negative anti-Harmonin antibodies

Anti-thyroid Abs, LAC

ANCA

ANCA

  1. EGD esophagogastroduodenoscopy, IBD inflammatory bowel disease, IC ileocolonoscopy, LAC Lupus anticoagulant.