CFTR. A total of 35 heterozygous CFTR variants were found, the most prevalent of them were: rs113993960 (p.F508del) HF—1.69%, which was 60% among all detected CFTR variants), rs397508679 (p.L138dup) (HF—0.32% and 11.4% among all detected CFTR variants), CFTRdele2.3 (c.54-5940_273+10250del21080) (HF—0.24% and 8.6% among all detected CFTR variants), rs121908769 (p.L88Ifs*22) (HF—0.24% and 8.6% among all detected CFTR variants). Here, CFTR is linked to hydrops fetalis.