Hair Biomarkers Study
HBS-II
2 other identifiers
observational
600
1 country
1
Brief Summary
Young children aged 0-4 years may be exposed to adverse childhood experiences (ACEs) and/or early life adversity (ELA), which are linked with worse physical and mental health across their lifespan. On the other hand, positive childhood experiences (PCEs) can build resilience and prevent or protect against these detrimental outcomes. Data analyses will assess the interactions of ACEs, PCEs, parenting, and poverty on the early social psychology of childhood and develop objective measures for altered stress regulation using hair cortisol as a chronic stress biomarker.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Nov 2024
Longer than P75 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
November 18, 2024
CompletedFirst Submitted
Initial submission to the registry
May 30, 2025
CompletedFirst Posted
Study publicly available on registry
June 8, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2029
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 1, 2029
June 24, 2025
May 1, 2025
5 years
May 30, 2025
June 18, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (3)
Identification of Participants hair cortisol concentrations (HCC) and hair oxytocin concentrations (HOC)
Hair samples measured at study entry and 6 month intervals up to 2 years (Study entry, 6-month, 12-month, 18-month, 24-month)
Hair Cortisol Concentration (HCC), nanograms cortisol/milligram of hair
From enrollment to end of study in 2 years
Hair Oxytocin Concentration (HOC), picogram oxytocin/milligram of hair
From enrollment to end of study in 2 years
Study Arms (2)
Healthy Infants
Ages between 6-24 months
Healthy Mothers
Mothers with children aged between 6-24 months who are eligible for the HBS-II
Interventions
These studies will address fundamental gaps in our current knowledge and establish a scientific framework to investigate the long-term effects of early childhood adversity, physical or emotional trauma, child maltreatment, or other adverse experiences in early childhood, as well as the preventive and protective effects of loving, nurturing, and consistent caregiving offered to young children during their early childhood
Eligibility Criteria
Normal, healthy children aged 6 months to 24 months and their biological mothers (or father, if mother is not able to participate), in order to study the impact of early social ecology on their nascent social psychology, growth, and development in early childhood.
You may qualify if:
- Normal, healthy children aged 6 months to 24 months and their mothers (or father, if mother is not able to participate).
- Living in Santa Clara County, San Mateo County, or Alameda County in Northern California.
- Willing to give their home address (in order to receive the study kits at home).
- Committed to regular follow-up at 6-month intervals for the full study duration of 2 years.
You may not qualify if:
- Children with tinea capitis, alopecia areata, scalp eczema, dermatitis, or other scalp conditions.
- Children exposed to systemic steroid therapy for any diagnosis in the 3 months prior to study entry.
- Children receiving any other prescription drugs that alter HPA axis function or cortisol release, if the period of exposure is 2 weeks or longer within the 3 months prior to study entry.
- Children with chronic medical conditions such as cystic fibrosis, sickle cell disease, asthma, eczema, or other chronic conditions.
- Children with known developmental delay, Trisomy-21 and other chromosomal anomalies, seizure disorders, chronic pain, cerebral palsy, or other disabilities.
- Children whose hair has received chemical exposures (e.g., dying, bleaching, chemical straightening, perming) in the 90 days prior to study entry or for 90 days before each follow-up appointment during the 2-year study period.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Stanford University
Palo Alto, California, 94304, United States
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Director of Stanford Child Wellness Lab
Study Record Dates
First Submitted
May 30, 2025
First Posted
June 8, 2025
Study Start
November 18, 2024
Primary Completion (Estimated)
December 1, 2029
Study Completion (Estimated)
December 1, 2029
Last Updated
June 24, 2025
Record last verified: 2025-05
Data Sharing
- IPD Sharing
- Will not share
IPD will not be shared because of proprietary methods used for analysis of hair samples.