is a breast cancer type that does not use progesterone to grow.

is a breast cancer fueled by progesterone hormones and often treatable.

is an inherited disorder causing worsening balance problems and hearing loss.

is an inherited eye disorder causing progressive damage and vision loss.

is a rare motor neuron disease affecting speech, swallowing, and breathing.

is a rare white matter disorder that progressively affects movement and development.

is a rare disorder causing worsening movement, coordination, and brain function.

is an inherited eye condition causing worsening central and color vision.

causes gradually worsening hearing loss when a tiny middle-ear bone becomes fixed.

is a rare inherited brain disorder causing progressive dementia and other symptoms.

is a rare autoimmune nerve disorder causing stiffness, spasms, and jerking.

is a rare inherited fat-metabolism disorder causing progressive brain white matter damage.

is a rare inherited disorder causing seizures and intellectual disability.

is a rare genetic syndrome causing tremor, speech problems, and developmental differences.

is a rare muscle condition that weakens eye movement over time.

is a syndrome causing progressive eye muscle weakness, myopathy, and weight loss.

is an inherited heart rhythm disorder that slows electrical signals.

is an inherited heart electrical problem causing progressive heart block, fainting, arrhythmias.

is an inherited heart rhythm disorder that can worsen over time.

is a rare inherited liver disease causing reduced bile flow in childhood.

is a rare inherited liver disease causing impaired bile flow (cholestasis).

is an inherited liver disease that impairs bile flow and damages liver.

is a rare inherited liver disease that reduces bile flow.

is a rare inherited liver disease causing severe cholestasis and jaundice.