FMR1 CGG Repeat Expansion Risk Interpreter

Interpret FMR1 CGG repeat lengths (normal, intermediate, premutation, full mutation) and calculate risk of fragile X syndrome, FXTAS, FXPOI, and transmitting expansion to offspring based on sex and repeat length.

Weight
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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Interpret FMR1 CGG repeat lengths (normal, intermediate, premutation, full mutation) and calculate risk of fragile X syndrome, FXTAS, FXPOI, and transmitting expansion to offspring based on sex and repeat length

Each component has a specific meaning:

  • Sex — The sex recorded for the scenario being assessed.
  • Repeat length — The repeat length recorded for the scenario being assessed.

Note: Interpret the fmr1 repeat risk result against the thresholds and context described above.

How to Use

Enter the sex, repeat length for the scenario you are assessing. Interpret FMR1 CGG repeat lengths (normal, intermediate, premutation, full mutation) and calculate risk of fragile X syndrome, FXTAS, FXPOI, and transmitting expansion to offspring based on sex and repeat length. Use the fmr1 repeat risk result to inform your calculation.

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