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# Path Configuration
from tools.preprocess import *
# Processing context
trait = "Rectal_Cancer"
cohort = "GSE170999"
# Input paths
in_trait_dir = "../DATA/GEO/Rectal_Cancer"
in_cohort_dir = "../DATA/GEO/Rectal_Cancer/GSE170999"
# Output paths
out_data_file = "./output/preprocess/3/Rectal_Cancer/GSE170999.csv"
out_gene_data_file = "./output/preprocess/3/Rectal_Cancer/gene_data/GSE170999.csv"
out_clinical_data_file = "./output/preprocess/3/Rectal_Cancer/clinical_data/GSE170999.csv"
json_path = "./output/preprocess/3/Rectal_Cancer/cohort_info.json"
# Get file paths
soft_file_path, matrix_file_path = geo_get_relevant_filepaths(in_cohort_dir)
# Get background info and clinical data
background_info, clinical_data = get_background_and_clinical_data(matrix_file_path)
print("Background Information:")
print(background_info)
print("\nSample Characteristics:")
# Get dictionary of unique values per row
unique_values_dict = get_unique_values_by_row(clinical_data)
for row, values in unique_values_dict.items():
print(f"\n{row}:")
print(values)
# 1. Gene Expression Data Availability
# Yes, this dataset contains gene expression data (Affymetrix U133 platform mentioned)
is_gene_available = True
# 2. Variable Availability and Data Type Conversion
# 2.1 Find row indices for clinical variables
trait_row = 0 # KRAS mutation status is at row 0
age_row = None # Age data not available
gender_row = None # Gender data not available
# 2.2 Data type conversion functions
def convert_trait(val):
if not isinstance(val, str):
return None
val = val.lower().split(': ')[-1]
if 'mutant' in val:
return 1
elif 'wild-type' in val:
return 0
return None
def convert_age(val):
return None # Not used since age data not available
def convert_gender(val):
return None # Not used since gender data not available
# 3. Save metadata
validate_and_save_cohort_info(
is_final=False,
cohort=cohort,
info_path=json_path,
is_gene_available=is_gene_available,
is_trait_available=(trait_row is not None)
)
# 4. Extract clinical features
if trait_row is not None:
clinical_features = geo_select_clinical_features(
clinical_df=clinical_data,
trait=trait,
trait_row=trait_row,
convert_trait=convert_trait,
age_row=age_row,
convert_age=convert_age,
gender_row=gender_row,
convert_gender=convert_gender
)
# Preview the extracted features
print("Preview of clinical features:")
print(preview_df(clinical_features))
# Save clinical data
clinical_features.to_csv(out_clinical_data_file)
# Get gene expression data from matrix file
genetic_data = get_genetic_data(matrix_file_path)
# Examine data structure
print("Data structure and head:")
print(genetic_data.head())
print("\nShape:", genetic_data.shape)
print("\nFirst 20 row IDs (gene/probe identifiers):")
print(list(genetic_data.index)[:20])
# Get a few column names to verify sample IDs
print("\nFirst 5 column names:")
print(list(genetic_data.columns)[:5])
# These appear to be probe IDs from Affymetrix U133 Plus 2.0 microarray
# Not gene symbols - need to map to HGNC gene symbols
requires_gene_mapping = True
# Extract gene annotation data
gene_annotation = get_gene_annotation(soft_file_path)
# Display column names and preview data
print("Column names:")
print(gene_annotation.columns)
print("\nPreview of gene annotation data:")
print(preview_df(gene_annotation))
# 1. The 'ID' column in gene annotation matches probe IDs in gene expression data
# and 'Gene Symbol' contains the corresponding gene symbols
# 2. Extract mapping between probe IDs and gene symbols
mapping_data = get_gene_mapping(gene_annotation, "ID", "Gene Symbol")
# 3. Apply gene mapping to convert probe-level data to gene-level data
gene_data = apply_gene_mapping(genetic_data, mapping_data)
# Preview gene data
print("Preview of gene expression data after mapping:")
print(gene_data.head())
print("\nShape:", gene_data.shape)
# Reload clinical data that was processed earlier
selected_clinical_df = pd.read_csv(out_clinical_data_file, index_col=0)
# 1. Normalize gene symbols
genetic_data = normalize_gene_symbols_in_index(gene_data)
genetic_data.to_csv(out_gene_data_file)
# 2. Link clinical and genetic data
linked_data = geo_link_clinical_genetic_data(selected_clinical_df, genetic_data)
# 3. Handle missing values systematically
linked_data = handle_missing_values(linked_data, trait)
# 4. Check for bias in trait and demographic features
trait_biased, linked_data = judge_and_remove_biased_features(linked_data, trait)
# 5. Final validation and information saving
note = "Dataset contains gene expression data from rectal cancer patients with focus on KRAS mutation status."
is_usable = validate_and_save_cohort_info(
is_final=True,
cohort=cohort,
info_path=json_path,
is_gene_available=True,
is_trait_available=True,
is_biased=trait_biased,
df=linked_data,
note=note
)
# 6. Save linked data only if usable
if is_usable:
os.makedirs(os.path.dirname(out_data_file), exist_ok=True)
linked_data.to_csv(out_data_file) |