Neurodevelopmental Conditions

This observational study aims to evaluate how patterns of behavioral and sensorimotor responses measured using the BlinkLab Dx1 smartphone application relate to autism diagnoses in children ages 2 to 11. BlinkLab Dx1 is a non-invasive, smartphone-based application under development as a diagnostic aid for healthcare providers assessing autism. In this study, children who have undergone a neurodevelopmental assessment within the past 12 months will complete two short, video-based sessions using the BlinkLab Dx1 app. The app presents visual and auditory stimuli and records reflexive sensorimotor responses and patterns of repetitive behavior. Additionally, primary caregivers will answer a short questionnaire in the app about symptoms and development. Information about prior neurodevelopmental assessments, including documented DSM-5-based diagnoses from routine clinical practice, will be collected retrospectively. The study will examine how the app's neurobehavioral measurements relate to previously assigned clinical diagnoses. These paired data will be used to develop and evaluate a machine learning-based algorithm using separate training and testing datasets to assess whether patterns measured by BlinkLab Dx1 can help distinguish children with autism from children without an autism diagnosis. This study does not involve any treatment or medical intervention.

Demonstrate the existence of neurodevelopmental alterations in organoids derived from samples of patients with bipolar disorder (BD) with a neurodevelopmental (ND) component, compared with patients with bipolar disorder (BD) without an ND component.

Safety and Efficacy of AAV9/AP4B1 For Patients with AP4B1-related Hereditary Spastic Paraplegia Type 47 (SPG47): A Phase 1/2 Single-Center, Open-Label Study of Stereotactic Intra-cisterna Magna Administration. The goal of this clinical trial is to evaluate whether a gene therapy can safely treat children with SPG47, a rare genetic condition that causes progressive spasticity and developmental delays. The main questions it aims to answer are: * Is the gene therapy safe and well tolerated? * Does the gene therapy improve motor function and developmental outcomes? Participants will: * Undergo screening assessments to confirm eligibility * Receive a single dose of the gene therapy vector * Attend follow-up visits for safety monitoring and developmental assessments over the course of five years

The aims of the BIBS Study The Brain Imaging in Babies study (BIBS) aims to improve understanding of how a baby's brain develops from before birth, up until 3-4 years of age. Working with children from a variety of backgrounds and communities, the investigators use a combination of state-of-the-art diagnostic tools such as MRI scans alongside traditional behavioural assessments to capture the earliest information on infant brain development. The focus of the BIBS study MRI scanning is a safe way of producing detailed images using strong magnetic fields and radio waves. It does not use X-ray. Along with learning more about brain development in general, the investigators also try to identify features that may in future help predict whether a child will or will not develop traits of conditions such as Autism Spectrum Disorder (ASD) or Attention Deficit Hyperactivity Disorder (ADHD). Long-term, this may help target useful interventions early on, helping children who are most in need. Since COVID-19 arrived in the United Kingdom (U.K.) in 2020, the investigators have been given ethical approval to include testing for this infection in the mothers and children participating in the study. This may provide an opportunity to better understand how mother and baby respond to infections. The investigators particularly welcome mothers who have had a positive COVID-19 test during their pregnancy to join the study.