Acquired idiopathic ADAMTS13 activity deficient thrombotic thrombocytopenic purpura in a population from Japan

Thrombotic thrombocytopenic purpura (TTP) is a type of thrombotic microangiopathy (TMA). Studies report that the majority of TTP patients present with a deficiency of ADAMTS13 activity. In a database of TMA patients in Japan identified between 1998 and 2008, 186 patients with first onset of acquired...

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Veröffentlicht in:PloS one 2012-03, Vol.7 (3), p.e33029-e33029
Hauptverfasser: Matsumoto, Masanori, Bennett, Charles L, Isonishi, Ayami, Qureshi, Zaina, Hori, Yuji, Hayakawa, Masaki, Yoshida, Yoko, Yagi, Hideo, Fujimura, Yoshihiro
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container_title PloS one
container_volume 7
creator Matsumoto, Masanori
Bennett, Charles L
Isonishi, Ayami
Qureshi, Zaina
Hori, Yuji
Hayakawa, Masaki
Yoshida, Yoko
Yagi, Hideo
Fujimura, Yoshihiro
description Thrombotic thrombocytopenic purpura (TTP) is a type of thrombotic microangiopathy (TMA). Studies report that the majority of TTP patients present with a deficiency of ADAMTS13 activity. In a database of TMA patients in Japan identified between 1998 and 2008, 186 patients with first onset of acquired idiopathic (ai) ADAMTS13-deficient TTP (ADAMTS13 activity
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Studies report that the majority of TTP patients present with a deficiency of ADAMTS13 activity. In a database of TMA patients in Japan identified between 1998 and 2008, 186 patients with first onset of acquired idiopathic (ai) ADAMTS13-deficient TTP (ADAMTS13 activity &lt;5%) were diagnosed. The median age of onset of TTP in this group of patients was 54 years, 54.8% were female, 75.8% had renal involvement, 79.0% had neurologic symptoms, and 97.8% had detectable inhibitors to ADAMTS13 activity. Younger patients were less likely to present with renal or neurologic dysfunction (p&lt;0.01), while older patients were more likely to die during the TTP hospitalization (p&lt;0.05). Findings from this cohort in Japan differ from those reported previously from the United States, Europe, and Korea with respect to age at onset (two decades younger in the other cohort) and gender composition (60% to 100% female in the other cohort). We conclude that in one of the largest cohorts of ai-TTP with severe deficiency of ADAMTS13 activity reported to date, demographic characteristics differ in Japanese patients relative to those reported from a large Caucasian registry from Western societies. 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subjects ADAM Proteins - blood
ADAM Proteins - deficiency
ADAMTS13 Protein
Age
Age Factors
Biology
Blood transfusions
Cohort Studies
Congenital diseases
Demographics
Enzymes
Female
Females
Health risk assessment
Humans
Immunoassay
Immunoglobulins
Japan - epidemiology
Kidneys
Laboratories
Male
Medical research
Medicine
Middle Aged
Mortality
Patients
Pharmacy
Purpura
Purpura, Thrombocytopenic, Idiopathic - epidemiology
Purpura, Thrombocytopenic, Idiopathic - metabolism
Purpura, Thrombocytopenic, Idiopathic - pathology
Renal function
Statistics, Nonparametric
Studies
Thrombocytopenic purpura
Thrombotic microangiopathy
Thrombotic thrombocytopenic purpura
title Acquired idiopathic ADAMTS13 activity deficient thrombotic thrombocytopenic purpura in a population from Japan
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