GENETIC STUDIES OF OCD--BLOOD COLLECTION PHASE

我们正在进行一项强迫症的大型家庭研究 (OCD)完成了对100名强迫症先证者的彻底精神病检查 及其一级亲属，以及100名对照先证者及其 一级亲属 研究的具体目的是确定 如果强迫症、强迫行为、抽动障碍和 其他精神状况在强迫症的亲属中更高 先证者;比较家族性和散发性（非家族性）强迫症先证者 关于临床特征;澄清表型谱 可能在强迫症家庭中传播的条件;并使用 分离分析，探讨强迫症的遗传方式。 先证者是从五个治疗地点随机选择的。 在年龄、性别和种族上与强迫症病例相匹配的对照组， 通过随机数字拨号获得。 我们预计，研究结果将表明，强迫症是 家族性的，我们假设这种情况有一个潜在的 遗传基础 因此，我们正在收集成员的血液样本 强迫症家族，提取DNA和冷冻淋巴细胞， 将来进行遗传学研究的目的。 迄今为止，我们 已经确定了80个强迫症和78个控制家庭，他们同意 参加这项研究，共有508名受试者 考察 从177名强迫症患者身上采集了血样 并储存在两个参与实验室中。

We are conducting a large family study of obsessive-compulsive disorder (OCD), completing thorough psychiatric examinations of 100 OCD probands and their first-degree relatives, and 100 control probands and their first-degree relatives. The specific aims of the study are to determine if the rates of OCD, obsessive-compulsive behaviors, tic disorders, and other psychiatric conditions are higher in the relatives of the OCD probands; to compare familial and sporadic (non-familial) OCD probands with respect to clinical features; to clarify the phenotypic spectrum of conditions that may be transmitted in the OCD families; and to use segregation analysis to investigate the mode of inheritance of OCD. Probands are being randomly selected from five treatment sites. Controls, matched to the OCD cases on age, sex, and race, are being obtained by random digit dialing. We anticipate that the results of the study will indicate that OCD is familial, and we hypothesize that the condition has an underlying genetic basis. Therefore, we are collecting blood samples from members of the OCD families, and extracting DNA and freezing lymphocytes, with the purpose of conducting genetic studies in the future. To date, we have identified 80 OCD and 78 control families who have agreed to participate in the study, and a total of 508 subjects have been examined. Blood samples have been collected from 177 members of the OCD families and are stored in two participating laboratories.