Calcium transient measurements of EHTs made from WT and HCM iPSC-CMs. (A) Calcium TTP was not significantly different between HCM and WT EHTs. (B) Calcium exponential decay constant from peak (Tau) was not significantly different between HCM and WT EHTs. (C) Calcium systolic magnitude peak change ratio was not significantly different between HCM and WT EHTs. (D) Calcium diastolic magnitude ratio was not significantly different between HCM and WT EHTs.