@mmasco - HA in Basenjis is a recessive gene not unlike Fanconi. I have not seen or heard of HA in Basenjis for over 40yrs.... Same as Fanconi there were Clears/Carriers/Affected. Here is a link for HA in Basenji from many years ago https://www.basenji.org/PUBLIC/BasenjiHealthPages.pdf
HA is different than idiopathic autoimmune hemopytic anemia (IAHA)
Pyruvate kinase-deficient hemolytic anemia was first diagnosed in Basenjis in the 1960s, although
prior to that date Basenjis had died of a then-unknown form of anemia. Research on this anemia
began in the 1960s, culminating with a carrier test available in 1972. At that time, incidence was
around 4%, with about 18% being carriers. The inherited form of the disease now is extremely
rare.
Pk-deficient HA is different from idiopathic autoimmune hemolytic anemia (IAHA), a non-inherited
hemolytic anemia that occurs in all breeds of dogs. Because of the great reduction in the
frequency of the inherited form, the non-inherited form is now the likeliest cause of any hemolytic
anemia in Basenjis
For the owner
The disorder has been virtually eliminated from the breed, and testing has been largely
discontinued. Owners can ask for information about whether or not the dogs have been tested or
are entirely descended from tested clear stock. Because a DNA test is available, a definitive
diagnosis can be made to rule out pk-deficient HA.