Pandey Meenu, Mukherjee Sharmila B, Patra Bijoy, Kapoor Seema, Ged Cecile, Aneja Satinder, Seth Anju
Department of Pediatrics, Lady Hardinge Medical College, Kalawati Saran Children's Hospital, New Delhi, India.
J Pediatr Hematol Oncol. 2013 May;35(4):e167-70. doi: 10.1097/MPH.0b013e3182707218.
Congenital erythropoietic porphyria is a rare disorder of heme biosynthesis, resulting from decreased enzymatic activity of uroporphyrinogen III synthase. Clinical manifestations are heterogenous, of variable severity, and with occasional phenotypic-genotypic correlation. A 14-month-old boy developed fever, extensive dermatitis, and reddish colored urine. Anemia, erythrodontia, hepatosplenomegaly, and massive urinary elimination of predominantly type I porphyrins was suggestive of congenital erythropoietic porphyria. Although hemolysis remained mild and compensated, facial and digital mutilation developed indicative of moderate clinical phenotype. Mutational analysis revealed compound heterozygosity of mutant alleles, including a novel mutation (p.Pro190Leu). The child received supportive management and underwent facial reconstruction successfully.
先天性红细胞生成性卟啉病是一种罕见的血红素生物合成障碍疾病,由尿卟啉原III合酶的酶活性降低所致。临床表现具有异质性,严重程度不一,且偶尔存在表型-基因型相关性。一名14个月大的男孩出现发热、广泛性皮炎和红色尿液。贫血、红牙、肝脾肿大以及大量尿液中主要排出I型卟啉提示先天性红细胞生成性卟啉病。尽管溶血仍较轻且处于代偿状态,但面部和手指残缺的出现表明临床表型为中度。突变分析显示突变等位基因的复合杂合性,包括一个新的突变(p.Pro190Leu)。该患儿接受了支持性治疗,并成功接受了面部重建手术。