Captain reported rejecting the takeoff due to loss of aircraft control. The reporter states that it may have been caused by a heavy aircraft that was departing on an intersecting runway.

Narrative

Takeoff roll on Runway 22L. Engines were stabilized at flex thrust. At about 60 kt. the aircraft yawed significantly to the right. No master caution or warning alarms but the yaw was sudden; significant and unexpected. It took full left rudder to keep the aircraft on the runway. I elected to reject the takeoff; suspecting an engine malfunction or some other controllability problem. The FO (First Officer) did not see any engine malfunction. We began to suspect a heavy aircraft that was departing Runway 28R had blown us with its engine jet blast as we [were] on our takeoff roll on 22L. Maintenance interrogated our aircraft and engines wirelessly and did not see any abnormality. Braking was minimal and brake temperatures were low after the rejected takeoff. With the concurrence of Maintenance and after following SOP; we returned to Runway 22L for a successful; normal takeoff.Cause [was] due to the orientation of 22L and 28R; and ATC clearing both aircraft for takeoff simultaneously. ATC should be careful clearing a heavy and another aircraft for takeoff simultaneously from both runways.