Orphanet journal of rare diseases · 2025
Chronic inflammatory arthritis in 22q11.2 deletion (DiGeorge) syndrome: a multicentric study.
СтатьяМногоцентровое исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Liebling Emily, Freychet Caroline, Guarnieri Valentina, Jelusic Marija, López Jordi Antón, Kallinich Tilmann, Montin Davide, McCann Liza J, Bader-Meunier Brigitte, Crowley Terence Blaine, Lemelle Irene, McDonald-McGinn Donna, Serrano Mercedes, Stephan Jean Louis, Azzari Chiara, Simonini Gabriele, Giani Teresa
Аннотация
BACKGROUND: 22q11 deletion syndrome (22q11DS) is a genetic disorder caused by a deletion at chromosome 22q11.2. Chronic arthritis may be occasionally observed in these, if this manifestion represents a concomitant association of two diseases or a rare complication of Di George syndrome is still a debate. This study aims to describe a retrospective, multicenter analysis of patients with 22q11DS, who developed chronic inflammatory arthritis, focusing on clinical presentation, diagnosis, and management.
METHODS: An e-mail survey was distributed to pediatric centers, identifying patients diagnoses with both 22q11DS and chronic arthritis from 1992 to 2024. The clinical course was documented through medical record review.
RESULTS: A total of 30 patients were identified with a female predominance (20 cases). The median age at 22q11DS diagnosis was 12 months, and 3 years at arthritis onset. Polyarticular involvement was observed in 50.0% of patients, and the median number of affected joints at onset among all patients was 4.5 (range 1-25). Only one child developed uveitis. Erythrocyte sedimentation rate was elevated in 72.0% of tested patients, and C-reactive protein in 83.3%. Antinuclear antibodies was negative in 23.3% of patients, while rheumatoid factor (RF) and cyclic citrullinated peptide (CCP) antibodies were consistently negative. Treatment included systemic glucocorticoids (53.3%), methotrexate (66.6%), and biologic agents (56.7%). Infections were generally mild, primarily affecting the respiratory tract. At last follow-up, arthritis persisted active in 53.3% of cases, with 78.6% of those in remission still on medication.
CONCLUSIONS: Arthritis in 22q11DS appears to be a distinct clinical entity characterized by an aggressive phenotype and a severe, prolonged course, typically lacking CCP and RF antibodies and rarely associated with uveitis. These features suggest a distinct clinical entity, diverging from classical juvenile idiopathic arthritis.
METHODS: An e-mail survey was distributed to pediatric centers, identifying patients diagnoses with both 22q11DS and chronic arthritis from 1992 to 2024. The clinical course was documented through medical record review.
RESULTS: A total of 30 patients were identified with a female predominance (20 cases). The median age at 22q11DS diagnosis was 12 months, and 3 years at arthritis onset. Polyarticular involvement was observed in 50.0% of patients, and the median number of affected joints at onset among all patients was 4.5 (range 1-25). Only one child developed uveitis. Erythrocyte sedimentation rate was elevated in 72.0% of tested patients, and C-reactive protein in 83.3%. Antinuclear antibodies was negative in 23.3% of patients, while rheumatoid factor (RF) and cyclic citrullinated peptide (CCP) antibodies were consistently negative. Treatment included systemic glucocorticoids (53.3%), methotrexate (66.6%), and biologic agents (56.7%). Infections were generally mild, primarily affecting the respiratory tract. At last follow-up, arthritis persisted active in 53.3% of cases, with 78.6% of those in remission still on medication.
CONCLUSIONS: Arthritis in 22q11DS appears to be a distinct clinical entity characterized by an aggressive phenotype and a severe, prolonged course, typically lacking CCP and RF antibodies and rarely associated with uveitis. These features suggest a distinct clinical entity, diverging from classical juvenile idiopathic arthritis.