The rare condition has only been observed in a few families, and has no adverse effects on overall health. Researchers found that, in the case of one family with a history of adermatoglyphia, there was a mutation in the gene that coded for the protein SMARCAD1. They theorized that this protein may be an integral part of fingerprint development—a process that still isn't fully understood.
Key Facts In This Video
The main pattern of your fingerprints is determined by genetics. (0:21)
Volar pads that develop along a slant lead to loop-patterned fingerprints, whereas more central pads lead to arches or whorls. (1:33)
The position of the fetus, the density of the amniotic fluid, and other environmental factors in the womb influence the formation of fingerprints. (2:16)