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Finger length may offer clues to breast cancer risk

NCT ID NCT07436169

Completed Knowledge-focused Sponsor: Malatya Turgut Ozal University Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether the ratio of index to ring finger length (2D:4D) is different in women with breast cancer compared to healthy women. Researchers measured the fingers of 132 women (79 with breast cancer, 53 without) and checked if the ratio related to tumor markers in the blood. The goal was to see if this simple finger measurement could hint at hormonal exposure linked to cancer risk, but no treatment or diagnosis was tested.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to
If a link is found, finger ratios might become a simple, non-invasive clue to hormonal exposure and breast cancer risk, but this is very early and not a diagnostic tool.
What could go wrong
This is a small, completed observational study, not a treatment trial. Any association found may not be strong enough to be useful, and finger ratios are not a reliable way to diagnose or predict cancer.

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Conditions

The condition(s) this trial relates to.

autosomal dominant medullary cystic kidney disease with or without hyperuricemia breast cancer breast neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ANTHROPOMETRIC MEASUREMENTS BREAST CANCER FEMALES

Contacts and locations

Locations

  • Malatya Turgut Ozal University

    Malatya, Central, 44100, Turkey (Türkiye)

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