Examples include Kwa-speaking yam cultivators in West Africa whose agriculture favoured the haemoglobin S (HbS) 'sickle-cell' allele, and Polynesian voyages that led to positive selection for ...

Pfizer is voluntarily withdrawing its sickle cell disease (SCD) therapy Oxbryta from all world markets after finding an "imbalance" in deaths in its clinical trials programme. It's a blow to the ...