KCNN4 and hereditary elliptocytosis: We could not clearly decipher between HE or HPP for P21, 22 and P29. Other membrane genes with mutations were PIEZO1 (P30 and P36, DHSt), KCNN4 (P31, GARDOS MIM 616689), SPTB (P32, elliptocytosis) and SLC4A1 (P36, SEA ovalocytosis, MIM 166900).