Finger length may offer clues to breast cancer risk
NCT ID NCT07436169
First seen Feb 28, 2026 · Last updated Jun 23, 2026 · Updated 12 times
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.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Malatya Turgut Ozal University
Malatya, Central, 44100, Turkey (Türkiye)
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.
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.