<prompt> The chromosomal karyotype in patau syndrome is47XX,2146XX47XX,1845XX,der14;2147XX,13  <response>: TRISOMY 13: PATAU SYNDROME Incidence: 1 in 15,000 bihs Karyotypes: Trisomy 13 type: 47,XX, 13 Translocation type: 46,XX,13,der13;14q10;q10 Mosaic type: 46,XX47,XX, 13 Robbins Basic Pathology, 9 th edition. page : 238 