Maternal whole blood transcriptomics to assess changes with gestational age in normal pregnancy I

Maternal whole blood colected longitudinally were profiled using Affymetrix Human Transcriptome Arrays to evaluate changes with gestational age and with labor in normal pregnancy. This is a re-analysis of GSE113809, with additional metadata and different summarization of gene expression at ENTREZ ID level instead of Transcript Cluster as in the original submission. LMP is the date at the last menstrual period. Oper_LMP is the date at the last menstrual period with eventual adjustment based on ultrasound determination. Gestational age (GA) (weeks) is defined as (Date at sample - Oper_LMP)/7. For control pregnancies, SubGroup defines those with spontaneous labor at term (TL) as opposed with those delivered by cesarean section (TNL). Train is 1 if the sample was used in sub-challenge 1 in the training set as opposed to test set (0). D2 is 1 if the sample was used in the 2 interval prediction scenario, and if yes, it was assigned to the interval given by column D2Interval. D3 is 1 if the sample was used in the 3 interval prediction scenario, and if yes, it was assigned to the interval given by column D3Interval. DiagnosisGA is the gestational age at diagnosis with any disease indicated by the Group variable, and it is set to NA for normal pregnancies. The study included normal pregnancies with (n=8) and without (n=8) spontaneous labor at term. Half of the women in each group had 3 longitudinal samples taken from 12.1-40.3 weeks of gestation, while the other half of women had only one sample taken at term before delivery, for a total of 32 samples.