Table 1. Expression of placental enriched genes in RNA-Seq data from human placenta, endometrial stromal fibroblasts (ESFs), decidual stromal cells (DSCs), and human first trimester decidua.

Expression levels are shown as transcripts per million (TPM) values, the Tissue Specificity (TS) score is calculated as the fold enrichment of each gene relative to the tissue with the second highest expression of that gene. Placental data are from https://www.proteinatlas.org/humanproteome/tissue/placenta.

Gene	Description	TS	Placenta	ESF	DSC	Decidua
CSH1	Chorionic somatomammotropin hormone 1	211	13,487	0	0	0
CSH2	Chorionic somatomammotropin hormone 2	193	3932	0	0	6.67
CSHL1	Chorionic somatomammotropin hormone like 1	352	217	0	0	0
GH2	Growth hormone 2	199	189	0	0	0.6
HBG1	Hemoglobin subunit gamma 1	147	18,254	0	0	0
ISM2	Isthmin 2	112	274	0	0.2	1.5
PSG1	Pregnancy-specific beta-1-glycoprotein 1	377	363	0.64	20.9	0
PSG2	Pregnancy-specific beta-1-glycoprotein 2	222	343	0.15	7.9	0.5
PSG3	Pregnancy-specific beta-1-glycoprotein 3	162	189	0	0.6	0.7
PSG5	Pregnancy-specific beta-1-glycoprotein 5	108	158	2.3	14.3	0
PSG9	Pregnancy-specific beta-1-glycoprotein 9	118	147	47.2	36.1	0.0
XAGE3	X antigen family member 3	167	575	0	0	0.05