Clinical Characteristics and Gene Mutations in 186 Cases of Kindler Syndrome / 中国医学科学院学报

Objective To investigate the clinical characteristics and genetic mutations in Kindler syndrome(KS)and provide a theoretical basis for the diagnosis and treatment of KS. Methods The clinical data of one case of KS from Peking Union Medical College Hospital and 185 cases reported in literature were collected. The gene mutation types,patient clinical data,and tumor characteristics were statistically analyzed. Results A total of 186 cases were enrolled,including 110 males and 76 females,with the mean age of(28±16)years. The data of gene mutation and specific clinical manifestations were available in 151 and 94 patients,respectively. The main clinical manifestations of KS included poikiloderma,occurrence of blister in childhood,and photosensitivity,and the secondary clinical manifestations included oral inflammation,palmoplantar keratoderma,webbing/pseudoainhum,dysphagia,urethral stricture and so on.Oral inflammation(r=0.234,P=0.023),palmoplantar keratoderma(r=0.325,P=0.001),webbing/pseudoainhum(r=0.247,P=0.016),dysphagia(r=0.333,P=0.001),urethral stricture(r=0.280,P=0.006)were significantly correlated with age,showing significantly higher incidence in the patients over 32 years old.Urethral stricture(χ2=11.292,P=0.001)and anal stenosis(χ2=4.014,P=0.045)were significantly correlated with sex,with higher incidence in males.Eighty different mutations were found in 151 patients,and the most common gene mutation was c.676C>T.Forty-one tumors occurred in 27 patients,among which squamous cell carcinoma accounted for 92.7%. The gene mutation site had no significant correlation with squamous cell carcinoma or patient country. Conclusions The c.676C>T in FERMT1 gene is the most common mutation in KS.The patients are prone to squamous cell carcinoma and mainly attacked at the exposure sites(hand and mouth).

Síndrome de Rothmund-Thomson tipo I: comunicación de un caso en población colombiana y revisión de la literatura / Rothmund-Thomson type I syndrome: a case report in colombian poblation and review of the literature

El síndrome de Rothmund-Thomson (SRT) es una genodermatosis autosómica recesiva, que se presenta con poiquilodermia congénita, causada por mutaciones en el gen RECQL4. La poiquilodermia congénita se caracteriza por erupción cutánea, atrofia de la piel y lesiones telangiectásicas con áreas de hiperpigmentación o despigmentación. El SRT se asocia a baja talla, pestañas, cejas y pelo del cuero cabelludo escasos, anormalidades esqueléticas, envejecimiento prematuro, fotosensibilidad, distrofia ungueal y predisposición a cánceres de piel y hueso. Se describe el caso de un paciente con síndrome de Rothmund-Thomson tipo I.

Rothmund-Thomson syndrome (RTS) is an autosomal recessive genodermatosis presenting with congenital poikiloderma, caused by mutations in the RECQL4 gene. Congenital poikiloderma, is characterized by: cutaneous rash, skin atrophy and telangiectasic lesions with areas of hyperpigmentation or depigmentation. RTS is associated with short stature, sparse eyelashes, sparse eyebrows and sparse scalp hair, skeletal abnormalities, premature aging, photosensitivity, ungueal dystrophy and predisposition to skin and bone cancers. Here we report the case of a patient with Rothmund-Thomson syndrome type I.