Anxiety and Recurrent Abdominal Pain in Children
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 发起方
- 入组人数
- 81
- 试验地点
- 1
- 主要终点
- Abdominal Pain Index (API)
研究概览
简要总结
This study aims to determine whether citalopram is a useful, well-tolerated, and safe treatment for children and adolescents ages 7 to 18 years with functional abdominal pain. The study hypothesis is that citalopram will be better than placebo in producing clinical improvement and reductions in abdominal pain. It is also hypothesized that citalopram and placebo will not differ in terms of safety and tolerability.
详细描述
This study aims to determine the relative efficacy, tolerability, and safety of the citalopram in the treatment of pediatric functional recurrent abdominal pain (FAP) in children and adolescents ages 7 to 18 years, inclusive. The goal is to recruit and randomize 100 subjects to citalopram or placebo. Secondary aims include to determine if citalopram is superior to placebo in reducing comorbid anxiety and depressive symptoms in children and adolescents with FAP, to explore potential mediators (i.e., anxiety, depression) and moderators (e.g., age, gender, referral from primary or specialty care) of treatment response, and to explore the durability and tolerability of citalopram treatment 18 weeks following completion of the double-blind treatment phase with the goal of generating data useful to the development of future studies. The study is novel in conducting recruitment, assessment, and treatment in traditional medical settings. Limited exclusion criteria and the delivery of study assessments and interventions within routine practice settings provide for considerably greater external validity than the typical efficacy study.
Study hypotheses:
- Citalopram will be superior to placebo in producing clinical improvement and reductions in abdominal pain.
- Citalopram and placebo will not differ in tolerability or safety.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 7 Years 至 18 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •At least 3 episodes of abdominal pain during the previous 3 months associated with functional impairment in the absence of explanatory physical disease following clinically appropriate medical assessment.
- •Age 7 years 0 months to 18 years 11 months, inclusive, at initial evaluation.
- •Significant global functional impairment as reflected by a score less than 70 on the Children's Global Assessment Scale
- •Residing with a primary caretaker (i.e., parent, legal guardian, relative functioning as a parent, or foster parent) who has known the child well for at least 6 months prior to study entry and has legal authority to consent to participation.
排除标准
- •Physical disease sufficient to explain the subjective distress and functional impairment suffered by the subject.
- •FAP with atypical features:
- •Abnormal abdominal or rectal examination
- •GI bleeding (i.e., hematest positive stool or hematemesis)
- •History of recurrent or persistent fever associated with the abdominal pain
- •Involuntary weight loss (> 5% of body weight) over the previous 3 months
- •Previous laboratory evidence suggesting explanatory physical disease
- •Persistent nighttime awakenings due to abdominal pain (at least once per week and > 4 per month)
- •Persistent or bilious vomiting (at least once per week and > 4 per month)
- •Abdominal pain exclusively associated with menstruation
- •Physical disease in which citalopram monotherapy or study participation might prove to be disadvantageous or incompatible with quality care, including bleeding disorder characterized by prolonged bleeding time, uncontrolled epilepsy, or poorly controlled diabetes mellitus.
- •Psychiatric problem or disorder in which citalopram monotherapy or study participation might prove to be disadvantageous or incompatible with quality care, including evidence that the child is a serious acute danger to self or others, anorexia nervosa, bulimia nervosa, schizophrenia, schizoaffective disorder, alcohol or substance abuse/dependence, or bipolar disorder.
- •History of mental retardation as defined by full scale IQ < 70 on previous testing or participation in special education placement for mild to severe mental retardation.
- •Inadequate English speaking abilities of child or parent(s) to complete study measures and/or communicate with study examiners.
- •Adequate prior trial of citalopram, escitalopram, or another selective serotonin reuptake inhibitor or venlafaxine. Adequate trial is defined as at least 4 weeks of citalopram 20 mg/day, escitalopram 10 mg/day, fluoxetine 20 mg/day, fluvoxamine 100 mg/day, paroxetine 20 mg/day, sertraline 50 mg/day, or venlafaxine 75 mg/day.
- •Concurrent use of non-steroidal anti-inflammatory drugs (NSAIDs), aspirin, or anticoagulant medications.
- •Treatment for physical or psychiatric illness initiated within the prior 4 weeks or escalating in dosage or intensity.
- •History of hypersensitivity to citalopram or serotonin-syndrome.
- •Participation in any investigational drug study within thirty days of study entry.
- •Pregnancy
- •Sexually active female subjects refusing to use a medically accepted method of birth control during the study, or who engaged in unprotected sexual activity during the 30 days prior to the study.
研究组 & 干预措施
Citalopram
Citalopram was initiated at 10 mg daily for one week, with dosage increased to 20 mg daily during week 2, with an optional increase to 40 mg daily at week 4 or thereafter if response was judged to be suboptimal (CGI-I or CGI-S > 2).
干预措施: Citalopram (Drug)
Placebo
Placebo administered in capsules identical to those containing citalopram using microcrystalline cellulose.
干预措施: Placebo (Drug)
结局指标
主要结局
Abdominal Pain Index (API)
时间窗: Weeks 0, 2, 4, and 8
The API is a well-validated and reliable measure of abdominal pain assessing the frequency, duration, and intensity of abdominal pain consisting of five items assessing the frequency, duration, and intensity of abdominal pain experienced during the prior 2 weeks. Two of the items are scored from 0 to 5, one is scaled 0 to 8, and two are scaled 0 to 10, with lower scores considered to be better than higher scores. Item scores are standardized using Z-scores and then summed to yield an index of abdominal pain that has been sensitive to change in previous epidemiological and treatment studies of FAP. Alpha reliability ranged from 0.80 to 0.93. The API will be a continuous primary outcome measure of abdominal pain.
Clinical Global Impression Scale - Improvement (CGI-I) Will be Used to Assess Overall Global Illness Improvement. CGI-I Scores of 1 (Very Much Improved) or 2 (Much Improved) Indicate an Acceptable Treatment Response.
时间窗: The CGI will be completed at weeks 2, 4, and 8
Clinical Global Impression Scale - Improvement (CGI-I) is a 7-point scale, with lower values being more favorable, used to assess overall global illness improvement. The CGI is a clinician-completed measure, with values ranging from 1 (very much improved), 2 (much improved), 3 (minimally improved), 4 (no change), 5 (minimally worse), 6 (much worse), to 7 (very much worse). CGI-I scores of 1 (very much improved) or 2 (much improved) were considered to indicate an acceptable treatment response. A global measure of functional status was chosen as a primary outcome due to the broad array of symptomatology seen in pediatric RAP and the ambiguous relationship between functional status and symptoms of pain, anxiety, and depression in pediatric RAP. The CGI-I is a dichotomous primary outcome measure of global clinical improvement with clinical response be defined as a CGI-I score of 1 or 2 for at least two consecutive weeks.
Clinical Global Impression Scale - Severity (CGI-S)
时间窗: Weeks 0, 2, 4, and 8
Clinical Global Impression Scale - Severity (CGI-S) is a 7-point scale is a clinician-completed measure that requires the clinician to rate the severity of the patient's illness at the time of assessment relative to the clinician's past experience with patients who have the same diagnosis. Considering total clinical experience, a patient is assessed on severity of illness at the time of rating, with values ranging from 1 (normal, not at all ill), 2 (borderline ill), 3 (mildly ill), 4 (moderately ill), 5 (markedly ill), 6 (severely ill), to 7 (extremely ill).
次要结局
- Children's Depression Rating Scale - Revised (CDRS-R)(Weeks 0, 2, 4, and 8)
- Children's Global Assessment Scale (C-GAS)(Weeks 0, 2, 4, and 8)
- Pediatric Anxiety Rating Scale (PARS)(Weeks 0, 2, 4, and 8)
研究者
John V. Campo, M.D.
Chief Of Child & Adolescent Psychiatry -Medical Director
Nationwide Children's Hospital