This study developed a no-significant-risk-level for TBBPA. The results of this review also noted that the weight of evidence from animal studies indicates that TBBPA has low toxicity. The review also suggested that high doses over long exposure durations would be needed to induce uterine tumor formation.1Source: Pecquet, Alison M., et al. “Derivation of a no‐significant‐risk‐level for tetrabromobisphenol A based on a threshold non‐mutagenic cancer mode of action.” Journal of Applied Toxicology 38.6 (2018): 862-878.