Integrated analysis of comorbidity, pregnant outcomes, and amniotic fluid cytogenetics of fetuses with persistent left superior vena cava

Table 5 Six cases with abnormal copy number variation sequencing results in persistent left superior vena cava

	Chromosomal location	Variation type	Fragment size	Clinical significance
1	Chromosome 15	Repetition	0.4 Mb	Potentially benign
2	Chromosome 2	Repetition	0.5 Mb	Potentially benign
3	Chromosome 11	Repetition	3.9 Mb	VUS
4	Chromosome 19	Repetition	187.4 Kb	VUS
5	Chromosome 1	Repetition	2.3 Mb	VUS
6	Chromosome 1	Repetition	> 10 Mb	Potential pathogenicity

VUS: Variants of uncertain significance.