What should you know about the sickle cell anaemia gene?

Haemoglobin gives red blood cells their oxygen-carrying function. A person may inherit one altered haemoglobin gene and be a carrier, often without symptoms, or inherit relevant altered genes from both parents and develop sickle cell disease. A carrier result is not the same as having the disease. The result may matter when planning a family because each biological parent contributes genetic material to a child.

A laboratory blood test can identify haemoglobin patterns and help distinguish sickle cell disease from other causes of anaemia. The result should be interpreted with your personal history and, when appropriate, a family member’s results. It does not by itself explain every symptom such as cold hands and feet, cold intolerance, or daytime sleepiness.

Ask the clinician who arranged testing whether the report indicates a carrier state, sickle cell disease, or another haemoglobin pattern. Keep a copy of the result and tell close relatives that family testing may be relevant. Genetic counselling can explain inheritance before pregnancy or when both partners are considering children. Do not start iron or other supplements for a gene result alone; treatment depends on the confirmed cause of any anaemia.

Seek urgent medical care for severe or new pain, trouble breathing, chest pain, fainting, marked weakness, fever, or symptoms of a stroke such as sudden difficulty speaking or moving one side. These symptoms need prompt assessment whether or not a genetic result is already known. Arrange routine follow-up for an unexplained anaemia result, repeated fatigue, or questions about reproductive planning.

Ask: Does my result show sickle cell trait, sickle cell disease, or another haemoglobin variant? Do I need confirmatory testing or testing for relatives? What should my partner know before pregnancy? Could another condition be contributing to my anaemia or symptoms?