Haplotypes of rs7041 and rs4588 result in structurally different proteins
| Variant | Alleles at rs7041 and rs4588 | Protein composition at positions 416 and 420 |
| GC1F | G/A | Asp/Thr |
| GC1S | T/A | Glu/Thr |
| GC2 | G/C | Asp/Lys |
The table shows the alleles present at rs7041 and rs4588, and the resulting protein composition at positions 416 and 420, respectively.