Analysis of 8 Cases of Blau Syndrome/Early-onset Sarcoidosis——Clinical Manifestations, Histopathology Features and Gene Mutation Diversity
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摘要:
目的 总结Blau综合征/早发型结节病的临床表现、病理特征及基因突变多样性。 方法 收集2011年1月至2022年12月我院诊治的8例Blau综合征/早发型结节病患者一般资料及临床表现、辅助检查等结果,总结分析其特征及多样性。 结果 8例患者中,男4例,女4例,发病年龄3~18月龄。7例(87.5%)患者以皮疹为首发症状。6例(75.0%)患者皮损表现为苔藓样丘疹,2例表现为红斑样皮损。有3例(37.5%)出现关节炎,2例(25.0%)出现葡萄膜炎等眼部炎症,4例(50.0%)出现间断性发热,3例(37.5%)出现神经系统、呼吸系统症状及高血压。8例患者皮肤组织病理均表现为非干酪样肉芽肿形成。血清学指标中,CRP和TNF-α在治疗前均显著升高,而经过糖皮质激素治疗,5例患者IL-6、IL-8、TNF-α及IL-2受体(IL-2R)显著下降。基因检测结果显示,7例患者中4例为p.R334W(c.1000C>T)突变,1例为p.H313R(c.938A>G)和p.R471C(c.1411C>T)双突变,1例为p. 476_477del(c.1427_1429delcct)。 结论 Blau综合征/早发型结节病在临床表现、组织病理及基因突变具有显著特征,但也具有多样性。 Abstract:Objective To summarize the clinical manifestations, pathological features and gene mutation diversity of Blau syndrome/early-onset sarcoidosis. Methods We collected general data, clinical manifestations, and auxiliary examination results from 8 patients who were diagnosed of Blau syndrome/early-onset sarcoidosis and treated in our hospital from January 2011 to December 2022, and then summarized and analyzed their characteristics and diversity. Results Among the 8 patients, 4 were males and 4 were females. The onset age was 3 to 8 months old. Rash was the first symptom in 7 patients(87.5%). 6 patients(75.0%) had papules and erythema.3 cases(37.5%) had arthritis. 2 cases(25.0%) had uveitis and other eye inflammation. 4 cases (50.0%) also showed intermittent fever. 3 cases (37.5%) showed symptoms in nerve and respiratory system, and hypertension respectively. The skin histopathology of 8 patients showed non-caseous granuloma formation. In laboratory detection, CRP and TNF-α were significantly increased before treatment, while IL-6, IL-8, TNF-α and IL-2 receptor(IL-2R) were significantly decreased in 5 patients after glucocorticoid therapy. The results of genetic testing showed that 4 of the 7 patients had p.R334W(c.1000C > T) mutation, 1 had p.H313R(c.938A > G) and p.R471C(c.1411C > T)double mutation, and 1 had p.476_477del (c.1427_1429delcct). Conclusions Blau syndrome/early-onset sarcoidosis has significant features in clinical manifestations, histopathology and gene mutation, but it also has diversity. -
表 1 Blau综合征/早发型结节病(BS/EOS)患者临床表现
Table 1. Clinical characteristics of patients with Blau syndrome/early-onset sarcoidosis(BS/EOS)
患者序号 性别 发病年龄(月龄) 家族史 基因突变 皮疹 关节炎 葡萄膜炎 发热 其他系统表现 1 女 12 - 未检出 红斑* 肩关节 - 间断性 中枢神经系统受累 2 男 8 父亲 p.H313R和p.R471C 红斑、溃疡 肩关节、指间关节* - 间断性 肺部结节 3 男 10 - p.R334W 丘疹* - 葡萄膜炎 - 高血压,肾畸形 4 男 18 - p.R334W 丘疹* - 虹膜睫状体炎、葡萄膜炎 - - 5 女 3 - p.R334W 丘疹* - - - - 6 女 16 - p. 476_477del 丘疹* 膝关节、腕关节 - 间断性 - 7 男 12 - - 丘疹* - - - - 8 女 4 - p.R334W 丘疹* - - 间断性 - *表示首发症状; -表示无相关病史/症状 表 2 BS/EOS多系统临床表现
Table 2. Multi-system clinical manifestations of BS/EOS
累及系统 临床表现 发生率 皮肤 丘疹 65%~90%[5, 13] 红色斑块伴鳞屑 结节性红斑 白细胞破裂性血管炎 苔藓样糠疹 皮肤溃疡 皮肤异色 关节 多发关节炎 73%~90%[5, 13] 腱鞘炎 指屈曲畸形 腕关节发育不良 桡骨双凹 尺骨肥大 第二掌骨畸形 眼部 葡萄膜炎 36%~80%[5, 13] 虹膜睫状体炎 多灶性脉络膜炎 带状角膜病变 白内障 青光眼 黄斑水肿 视网膜脱离 视神经萎缩 呼吸 间质性肺病 15.28%[13, 15] 泌尿 间质性肾炎 罕见[16-17] 急性肾小球肾炎 心血管 大血管炎 罕见[18-24] 主动脉炎 高血压 肺动脉高压 神经 面神经麻痹 罕见[22, 25-26] 发作性癫痫 其他 发热 27.78%[13] 全身性淋巴结病 脾肿大 罕见[8] 肝肿大 -
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