Sorting same rows & columns in two different matrices?

I have two matrices

A =
          16           2           3          13
           5          11           0           8
           9           7           NaN          12
           4          14           15           1
B =
           6           NaN           3          11
           NaN          16          10           0
           9            3           6          12
           8           14           20           1

I want to select non-zero or no NaN values from matrix 'A'. These values are placed in certain rows:columns of the matix. I want to consider those selected rows:columns from A, and select same rows:columns in matrix B (of same szie). For small matrices, it is easier to recognise but how do we do in matrices of size 92x128. Any leads will be appreciated?

Answer 1

[KSSV]

 A = [     16           2           3          13
           5          11           0           8
           9           7           NaN          12
           4          14           15           1];
       
idx = isnan(sum(A,2)) ; 
% pick non nan rows
A(~idx,:)

Answer 2

[dpb]

Piece o' cake with logical indexing...

C=B(isnan(A));      % just return the values
ix=isnan(A);        % return the pattern in logical array