This is a question for Cody :-)
Please check whether this one-liner does the job. I don't think there is the single function that does it.
The values must be integers, e.g. floating point integers. I cheated a bit by concatenating the column vectors to a matrix.
A = randi( 5, [ 30, 7 ] );
unique( A( arrayfun( @(k) (all(any(k==A(1:10,2:7)))), A(1:10,1)), 1 ) )