Summary
There are 4.6 million possible human antibody combinations of V/D/J genes across heavy and light chains (1). This is calculated from the number of VH, DH, JH, VK, JK, VL, and JL genes in the proteome.
1.
Rees AR. Understanding the human antibody repertoire. mAbs. 2020;12(1). Available from: https://doi.org/10.1080/19420862.2020.1729683