Journals / art / 2015 / Cilt: 30 - Sayı: 1

Ailesel Akdeniz Ateşli Çocuklarda MEFV Geninin R202Q Değişikliğinin Klinik Önemi

Clinical Significance of R202Q Alteration of MEFV Gene in Children With Familial Mediterranean Fever

Journal
art
Pages
51–56
DOI
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However, R202Q/M694V compound heterozygosity is more associated with mild phenotype than compound heterozygous mutation of M694V.

📌 3 Key Takeaways

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Objective & Hypothesis:Objectives: This study aims to investigate the clinical impact of the R202Q (c.605G>A) alteration of Mediterranean fever (MEFV) gene in children with familial Mediterranean fever (FMF).
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Key Findings & Data:Patients and methods: Medical records of 115 patients (51 males, 64 females; mean age 6.6±3.8 years; range 8 months to 15.8 years) presenting with FMF pre-diagnosis were examined.
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Conclusion & Impact:However, R202Q/M694V compound heterozygosity is more associated with mild phenotype than compound heterozygous mutation of M694V.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: This study aims to investigate the clinical impact of the R202Q (c.605G>A) alteration of Mediterranean fever (MEFV) gene in children with familial Mediterranean fever (FMF). Patients and methods: Medical records of 115 patients (51 males, 64 females; mean age 6.6±3.8 years; range 8 months to 15.8 years) presenting with FMF pre-diagnosis were examined. Patients were classified into two groups based on number of mutated alleles (one-mutant allele and two mutant alleles), and these groups were classified into three subgroups (Group 1; subgroup 1: M694V/R202Q, subgroup 2: M694V/other, subgroup 3: other/other, and Group 2; subgroup 4: R202Q/-, subgroup 5: other/-, subgroup 6: -/-). Sex, age, abdominal pain, fever, arthritis or arthralgia, myalgia, erysipelas-like erythema, chest pain, amyloidosis, family history of FMF, and definitive FMF frequency were compared between groups. Results: The most common allele alterations were the heterozygous R202Q alteration (27%) and the compound heterozygous mutation M694V/ R202Q (20.9%). The R202Q alteration of MEFV gene was detected in 76 patients (66%) (15 homozygous). There was non-M694V (E148Q, V726A) mutation in two of these patients. One (50%) of the patients with isolated R202Q homozygous alteration and six (19%) of the patients with isolated R202Q heterozygous alteration had definitive FMF. In the two-mutant allele group; abdominal pain, fever, arthritis/arthralgia, and definitive FMF frequency were lower in subgroup 1 than subgroup 2. There was no significant difference in clinical findings and definitive FMF frequency between subgroup 2 and subgroup 3. In the one-mutant allele group, clinical findings did not differ between subgroups. Conclusion: R202Q alteration of the MEFV gene may lead to symptoms consistent with FMF. However, R202Q/M694V compound heterozygosity is more associated with mild phenotype than compound heterozygous mutation of M694V.

Özet

Amaç: Bu çalışmada ailesel Akdeniz ateşi (AAA) hastalarında Akdeniz ateşi (MEFV) geninin R202Q (c.605G>A) değişikliğinin klinik etkisi araştırıldı. Hastalar ve yöntemler: AAA ön tanısı ile başvuran 115 hastanın (51 erkek, 64 kız; ort. yaş 6.6 ±3.8 yıl; dağılım 8 ay-15.8 yıl) tıbbi kayıtları incelendi. Hastalar mutasyona uğramış alel sayısına göre (bir mutant alel ve iki mutant alel) iki gruba ve bu gruplar da üç alt gruba ayrıldı (grup 1; alt grup 1: M694V/R202Q, alt grup 2: M694V/diğer, alt grup 3: diğer/diğer ve Grup 2; alt grup 4: R202Q/-, alt grup 5: diğer/-, alt grup 6 :-/-). Cinsiyet, yaş, karın ağrısı, ateş, artrit veya artralji, miyalji, erizipel benzeri döküntü, göğüs ağrısı, amiloidoz, AAA aile öyküsü ve kesin AAA sıklığı gruplar arasında karşılaştırıldı. Bulgular: En yaygın alel değişiklikleri heterozigot R202Q değişikliği (%27) ve M694V/R202Q bileşik heterozigot mutasyonu (%20.9) idi. MEFV geninin R202Q değişikliği 76 hastada (%66) (15 homozigot) bulundu. Bu hastaların ikisinde M694V dışı (E148Q, V726A) mutasyon vardı. İzole R202Q homozigot değişikliği olan hastaların birinde (%50) ve izole R202Q heterozigot değişikliği olan hastaların altısında (%19) kesin AAA vardı. İki mutant alel grubunda; karın ağrısı, ateş, artirit/artralji ve kesin AAA sıklığı alt grup 1’de alt grup 2’den az idi. Alt grup 2 ve alt grup 3 arasında klinik bulgular ve kesin AAA sıklığı açısından anlamlı farklılık yoktu. Bir mutant alel grubunda klinik bulgular alt gruplar arasında farklı değildi. Sonuç: MEFV geninin R202Q değişikliği AAA ile uyumlu semptomlara yol açabilir. Öte yandan, R202Q/M694V bileşik heterozigotluğu M694V’nin bileşik mutasyonlarına göre hafif fenotip ile daha çok ilişkilidir.

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Cite This Article

ÇANKAYA, T., BORA, E., ÜLGENALP, A., TORUN, M. B., KAVUKÇU, S., TÜRKMEN, M. A., SOYLU, A. (2015). Ailesel Akdeniz Ateşli Çocuklarda MEFV Geninin R202Q Değişikliğinin Klinik Önemi. art, Cilt: 30 - Sayı: 1, 51–56. https://ajindex.com/articles/198401

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