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Clinical Trial Summary

An accumulation of research evidence has pointed to parent-implemented communication treatment as effective in reducing the severity of social communication deficits in preschool children with ASD. Despite even high-quality evidence, real-world translation to clinical practice remains challenging, especially for children from lower-income families, for two reasons. First, the treatment outcome is highly variable despite study-level efficacy data, most likely due to unique child and parent factors that make treatment response uneven across individual children. Second, the cost of intervention with the largest effect sizes remains high due to its one-on-one format. With the overarching goal to reduce cost and to increase treatment effectiveness at the individual-child level, this project will conduct a randomized controlled trial (RCT) to compare the effectiveness of two options for intervention to address two specific objectives. The investigators will first ascertain whether parent-implemented communication treatment taught by a speech therapist in a Group format (up to 8 families learning together) is more effective than treatment learnt by the parents themselves in a Passive Control format (learning the same materials without the guidance of a therapist) at the study level. The investigators will then evaluate what combinations of parent and child behavioral factors determine which format of intervention is likely to be more effective at the individual-child level. It is likely that not all families require the more costly Group format of intervention. Machine learning analytics with cross-validation will be used in constructing predictive models of treatment response, which will increase the likelihood of these models being generalizable to new patients. This study will be among the first examples of fulfilling the promise of Precision Medicine in providing guidance to patients and families with developmental disorders not about whether to receive intervention but which option for intervention to receive in the context of multiple options. This predict-to prescribe approach of ASD intervention will likely lead to a paradigm shift in clinical practice and ultimately result in lowering the overall cost and increasing the effectiveness of intervention for children with ASD as individuals.


Clinical Trial Description

For parents of children with Autism Spectrum Disorder (ASD), the primary concern is to minimize the impact of the disorder, likely through evidence-based intervention. The secondary concern is whether any intervention prescribed is affordable and the logistics of completion feasible. This project will obtain evidence for ASD intervention options that have different costs and intervention delivery formats (group vs. passive control) to evaluate whether a more costly option is more effective at the study level. The investigators will then develop a predict to-prescribe approach that informs parents which intervention option would likely be most cost-effective in light of each family's unique characteristics (i.e., effectiveness at the individual-child level). [We use the term "parents" to mean caregivers throughout this protocol.] ASD affects 14 per 10,000 (0.14%) children in Hong Kong and 39.23 per 10,000 in Mainland China. Social communication is a deficit domain of ASD, and about 29% of preschoolers with ASD have severe verbal deficits. Intervention through pharmaceutical means remains elusive, leaving behavioral interventions the most realistic and immediate avenue of treatment. This project will focus on enhancing the cost-effectiveness of behavioral intervention that targets language and communication. The investigators will do so in the context of precision medicine, in which the investigators aim to identify the most cost effective intervention for the individual child with ASD. AIM OF STUDY: Objective 1: The investigators will first ascertain whether parent-implemented communication treatment taught by a speech therapist in a Group format (up to 8 families learning together) is more effective than treatment learnt by the parents themselves in a Passive Control format (learning the same materials without the guidance of a therapist) at the study level. Objective 2: The investigators will examine pre-treatment child and parent variables simultaneously and construct predictive models of response to the two treatment options (group, more costly vs. passive control, less costly) at the individual-child level. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05635760
Study type Interventional
Source Chinese University of Hong Kong
Contact Li Wang, PhD
Phone +86 18518105872
Email liwang001@cuhk.edu.hk
Status Recruiting
Phase N/A
Start date October 1, 2022
Completion date June 30, 2026

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