Double heterozygosity for Hb Pyrgos [beta83(EF7)Gly–>Asp] and Hb E [beta26(B8)Glu–>Lys] found in association with alpha-thalassemia.

Sawangareetrakul P, Svasti S, Yodsowon B, Winichagoon P, Srisomsap C, Svasti J*, Fucharoen S.
Hemoglobin. 2002 May;26(2):191-6.

Hb Siam [alpha15(A13)Gly–>Arg (alpha1) (GGT–>CGT)] is a typical alpha chain hemoglobinopathy without an alpha-thalassemic effect.

Turbpaiboon C, Svasti S, Sawangareetakul P, Winichagoon P, Srisomsap C, Siritanaratkul N, Fucharoen S, Wilairat P*, Svasti J.

Hemoglobin. 2002 Feb;26(1):77-81.