Long noncoding RNA repertoire in chicken liver and adipose tissue

Table 1 Significant correlations between expression for lncRNA-mRNA and mRNA–mRNA pairs considering FEELnc classes and distance between genes

	Same strand	Convergent	Divergent	Antisense exon	Antisense intron
Genes	674	194	370	23	100
lncRNA-mRNA
≤1 kb	51/91 (56%) +49/−2	5/28 (18%) +3/−2	23/105 (22%) +19/−4	5/23 (22%)	13/100 (13%)
>1 kb	139/583 (24%) +127/−12	13/166 (8%) +10/−3	34/265 (13%) +27/−7	5/23 (22%)	13/100 (13%)
p value	2.37 × 10⁻⁹	NS (0.15)	3.7 × 10⁻²	NA
mRNA–mRNA
≤1 kb	28%	17%	30%	24%
>1 kb	22%	19%	22%	24%
p value	NS (0.19)	NS (0.80)	0.09	NA

The FEELnc classes are “same strand”, “divergent” and “convergent” for intergenic lncRNAs, and “antisense exon” and “antisense intron” for genic lncRNAs
For intergenic lncRNAs, co-expression was tested according to the physical distance (1 kb) between the two genes considered
The difference in correlated pairs between the “distance” sets was tested by a Fisher test (NS: non-significant). Note that this co-expression table depends on the modeling of protein-coding genes obtained by Ensembl V84.4

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