Finger-length ratio (2D:4D) and early infant development

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study will measure the second-to-fourth finger length ratio (2D:4D) in term infants aged 12–18 months and compare those measurements with standardized tests of motor development and sensory processing. Researchers will enroll healthy, term infants and exclude those with preterm birth, genetic or metabolic disorders, intrauterine growth restriction, or a history of hand surgery. Measurements will be taken in person at the university site, combining simple finger length measurements with established developmental screening or assessment tools. The goal is to describe any associations between a putative marker of prenatal androgen exposure and early motor and sensory outcomes.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Term infants (37-40 weeks),
* Infants aged 12-18 months

Exclusion Criteria:

* Preterm infants,
* Infants with congenital infections or proven genetic changes,
* Infants and mothers diagnosed with metabolic, neurological, and genetic diseases,
* Maternal diabetes,
* Intrauterine growth retardation,
* Infants with a history of hand-related surgery,
* Children whose parents did not volunteer to study

Where it's running

• Nigde Omer Halisdemir University
  Niğde, Turkey (Türkiye) Recruiting

Study contacts

• Principal investigator: Rabia ZORLULAR — Nigde Omer Halisdemir University
• Study coordinator: Rabia ZORLULAR
• Email: rabiaeraslan118@gmail.com
• Phone: +5424362082

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.