Table 3. Positions of PNGS within the Env V1-V5 region that differed between paired mothers and infantsa.
| Subject ID | PNGSb | Causec | Domain |
| MIP1449 | 133 185a 186 407 413 | M I/D I/D M M | V1 V2 V2 V4 V4 |
| MIP2669 | 133 136 355 | I/D I/D M | V1 V1 C3 |
| MIP2873 | 356 459a 463 | M M M | C3 C4 V5 |
| MIP2617 | 442 | M | C4 |
| MIP1984 | 144 160 190a 332 337 392 397 403 442 461 | M M I/D M M I/D M M M I/D | V1 V2 V2 C3 C3 V4 V4 V4 C4 V5 |
| MIP1084 | 136 289 396 | M M I/D | V1 C2 V4 |
a
Positions within the Env V1-V5 region where a PNGS was absent in infant variants but present in the paired mother variants.
b
The PNGS positions are numbered according to the HXB2 amino acid sequence.
c
Changes in the number of PNGS occurred as a result of either insertion/deletions (I/D) or mutation (M).