TABLE 1.
Detailed information for the analysis of fetus‐specific linkage disequilibrium‐single nucleotide polymorphism (LD‐SNP) alleles in cell‐free DNA (cfDNA) from 55 twin pregnancies.
| Sample ID | Category 1 Block | Category 2 Block | Category 3 Block | Informative Block (n) | fftotal (%) | ff1 (%) | ff2 (%) | LDNZ Zygote | STR Zygote |
|---|---|---|---|---|---|---|---|---|---|
| M001 | 20 | 53 | 26 | 0 | 11.38 | NA | NA | MZ | MZ |
| M002 | 20 | 55 | 35 | 4 | 9.32 | 4.03 | 4.92 | DZ | DZ |
| M003 | 28 | 49 | 30 | 9 | 11.62 | 4.37 | 5.84 | DZ | DZ |
| M004 | 25 | 53 | 28 | 12 | 22.04 | 7.51 | 11.67 | DZ | DZ |
| M005 | 20 | 55 | 29 | 0 | 18.78 | NA | NA | MZ | MZ |
| M006 | 28 | 40 | 29 | 0 | 14.54 | NA | NA | MZ | MZ |
| M007 | 27 | 49 | 30 | 0 | 23.20 | NA | NA | MZ | MZ |
| M008 | 29 | 51 | 30 | 12 | 9.72 | 3.55 | 4.78 | DZ | DZ |
| M009 | 32 | 54 | 20 | 0 | 25.78 | NA | NA | MZ | MZ |
| M010 | 25 | 49 | 29 | 20 | 18.48 | 8.47 | 10.31 | DZ | DZ |
| M011 | 26 | 54 | 23 | 12 | 9.54 | 2.48 | 4.43 | DZ | DZ |
| M012 | 33 | 59 | 20 | 0 | 21.50 | NA | NA | MZ | MZ |
| M013 | 20 | 53 | 23 | 4 | 11.52 | 4.7 | 5.93 | DZ | DZ |
| M014 | 35 | 43 | 18 | 17 | 18.48 | 5.59 | 9.88 | DZ | DZ |
| M015 | 22 | 51 | 31 | 0 | 10.6 | NA | NA | MZ | MZ |
| M016 | 26 | 43 | 33 | 0 | 25.00 | NA | NA | MZ | MZ |
| M017 | 23 | 58 | 20 | 24 | 17.48 | 7.66 | 10.19 | DZ | DZ |
| M018 | 24 | 53 | 23 | 0 | 13.54 | NA | NA | MZ | MZ |
| M019 | 28 | 52 | 27 | 16 | 21.76 | 8.77 | 12.42 | DZ | DZ |
| M020 | 25 | 60 | 23 | 25 | 23.08 | 9.15 | 13.17 | DZ | DZ |
| M021 | 25 | 54 | 23 | 24 | 10.12 | 3.38 | 5.49 | DZ | DZ |
| M022 | 25 | 50 | 29 | 14 | 13.58 | 4.94 | 7.29 | DZ | DZ |
| M023 | 31 | 49 | 25 | 0 | 13.18 | NA | NA | MZ | MZ |
| M024 | 29 | 59 | 25 | 0 | 19.42 | NA | NA | MZ | MZ |
| M025 | 27 | 56 | 23 | 35 | 20.00 | 9.17 | 11.60 | DZ | DZ |
| M026 | 25 | 56 | 26 | 24 | 19.36 | 8.65 | 11.89 | DZ | DZ |
| M027 | 24 | 41 | 32 | 25 | 18.26 | 8.79 | 11.44 | DZ | DZ |
| M028 | 34 | 58 | 26 | 10 | 7.82 | 2.5 | 3.58 | DZ | DZ |
| M029 | 32 | 56 | 23 | 0 | 16.98 | NA | NA | MZ | MZ |
| M030 | 31 | 43 | 24 | 18 | 10.20 | 4.37 | 5.85 | DZ | DZ |
| M031 | 26 | 54 | 40 | 16 | 13.38 | 4.57 | 7.55 | DZ | DZ |
| M032 | 24 | 51 | 24 | 16 | 10.22 | 4.51 | 5.91 | DZ | DZ |
| M033 | 29 | 40 | 26 | 0 | 18.96 | NA | NA | MZ | MZ |
| M034* | 28 | 50 | 31 | 17 | 15.38 | 4.73 | 9.69 | DZ | DZ |
| M035 | 17 | 53 | 22 | 0 | 14.60 | NA | NA | MZ | MZ |
| M036 | 31 | 50 | 36 | 0 | 20.30 | NA | NA | MZ. | MZ |
| M037 | 25 | 56 | 17 | 0 | 8.70 | NA | NA | MZ | MZ |
| M038 | 21 | 51 | 22 | 0 | 12.50 | NA | NA | MZ | MZ |
| M039 | 27 | 53 | 25 | 0 | 10.86 | NA | NA | MZ | MZ |
| M040 | 35 | 52 | 30 | 0 | 17.06 | NA | NA | MZ | MZ |
| M041 | 28 | 52 | 30 | 0 | 7.12 | NA | NA | MZ | MZ |
| M042 | 25 | 47 | 30 | 0 | 18.34 | NA | NA | MZ | MZ |
| M043* | 35 | 61 | 24 | 22 | 9.18 | 2.47 | 6.22 | DZ | DZ |
| M044 | 34 | 52 | 23 | 0 | 24.30 | NA | NA | MZ | MZ |
| M045 | 24 | 52 | 27 | 24 | 21.54 | 8.30 | 13.06 | DZ | DZ |
| M046 | 25 | 59 | 23 | 0 | 11.64 | NA | NA | MZ | MZ |
| M047 | 29 | 47 | 29 | 0 | 16.72 | NA | NA | MZ | MZ |
| M048 | 32 | 55 | 23 | 0 | 24.60 | NA | NA | MZ | MZ |
| M049 | 21 | 52 | 25 | 0 | 20.28 | NA | NA | MZ | MZ |
| M050 | 29 | 52 | 24 | 16 | 7.62 | 3.34 | 4.15 | DZ | DZ |
| M051 | 23 | 63 | 26 | 33 | 22.22 | 8.73 | 13.34 | DZ | DZ |
| M052 | 30 | 47 | 31 | 27 | 13.22 | 5.34 | 7.22 | DZ | DZ |
| M053 | 26 | 52 | 22 | 0 | 14.44 | NA | NA | MZ | MZ |
| M054 | 23 | 53 | 25 | 18 | 16.18 | 6.50 | 9.68 | DZ | DZ |
| M055 | 24 | 51 | 22 | 18 | 11.32 | 5.98 | 7.47 | DZ | DZ |