mut_id = mutation identifier of the variant for the database
sys_name = cDNA name for the variant
prot_name= Protein change for the variant
path_poly = pathogenicity class of the variant. C5-Pathogenic;C4-Likely Pathogenic;C3-VOUS;C2-Likely Benign;C1-Benign
phenotype = R- Rett sydnrome; NR-not Rett syndrome
phe_class = additional details of phenotype
gender = M-Male;F-Female;U-Not known
pmid= pubmed publication id if published or submitter id if by direct submission
author1- first author
ds-direct submission (Yes if variant directly submitted to RettBASE)
year-year of publication/submission
pro_id= proband id in the database
prot_alt_name= protein change in old nomenclature
prot_domain = protein domain affected by the variant
mut_type=mutation type (missense/nonsense etc)
other_mut =details of other mutations if identified
x_inact= X-chromosome inactivation; has X-chromosome inactivation been measured? Options are Y, N, NA for not applicable (for males) and NK for not known
x_results =short description of X-chromosome inactivation results
control_screen= has any normal population controls been tested
control_results=results of population screening 
f_screen=has any family members been tested?
f_results=description of familial testing results, if any 
f_x_inact=results of any X-chromosome inactivation studies in family members 
chrom_abnorm=are there any chromosomal abnormalities? Options are Y, N, and NK for not known
detect=method of detecting the variant.
extent=the extent of the testing carried out for the proband
rsid=dbSNP identifier