{ "cells": [ { "cell_type": "code", "execution_count": 1, "id": "c58d4380", "metadata": { "execution": { "iopub.execute_input": "2025-03-25T06:06:56.037584Z", "iopub.status.busy": "2025-03-25T06:06:56.037352Z", "iopub.status.idle": "2025-03-25T06:06:56.203370Z", "shell.execute_reply": "2025-03-25T06:06:56.202983Z" } }, "outputs": [], "source": [ "import sys\n", "import os\n", "sys.path.append(os.path.abspath(os.path.join(os.getcwd(), '../..')))\n", "\n", "# Path Configuration\n", "from tools.preprocess import *\n", "\n", "# Processing context\n", "trait = \"Pancreatic_Cancer\"\n", "\n", "# Input paths\n", "tcga_root_dir = \"../../input/TCGA\"\n", "\n", "# Output paths\n", "out_data_file = \"../../output/preprocess/Pancreatic_Cancer/TCGA.csv\"\n", "out_gene_data_file = \"../../output/preprocess/Pancreatic_Cancer/gene_data/TCGA.csv\"\n", "out_clinical_data_file = \"../../output/preprocess/Pancreatic_Cancer/clinical_data/TCGA.csv\"\n", "json_path = \"../../output/preprocess/Pancreatic_Cancer/cohort_info.json\"\n" ] }, { "cell_type": "markdown", "id": "e13bb312", "metadata": {}, "source": [ "### Step 1: Initial Data Loading" ] }, { "cell_type": "code", "execution_count": 2, "id": "1cd49fcf", "metadata": { "execution": { "iopub.execute_input": "2025-03-25T06:06:56.204900Z", "iopub.status.busy": "2025-03-25T06:06:56.204744Z", "iopub.status.idle": "2025-03-25T06:06:56.690439Z", "shell.execute_reply": "2025-03-25T06:06:56.689806Z" } }, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "Clinical data columns:\n", "['CDE_ID_3226963', '_INTEGRATION', '_PATIENT', '_cohort', '_primary_disease', '_primary_site', 'additional_pharmaceutical_therapy', 'additional_radiation_therapy', 'adenocarcinoma_invasion', 'age_at_initial_pathologic_diagnosis', 'alcohol_history_documented', 'alcoholic_exposure_category', 'amount_of_alcohol_consumption_per_day', 'anatomic_neoplasm_subdivision', 'anatomic_neoplasm_subdivision_other', 'bcr_followup_barcode', 'bcr_patient_barcode', 'bcr_sample_barcode', 'days_to_birth', 'days_to_collection', 'days_to_death', 'days_to_diabetes_onset', 'days_to_initial_pathologic_diagnosis', 'days_to_last_followup', 'days_to_new_tumor_event_additional_surgery_procedure', 'days_to_new_tumor_event_after_initial_treatment', 'days_to_pancreatitis_onset', 'family_history_of_cancer', 'followup_case_report_form_submission_reason', 'followup_treatment_success', 'form_completion_date', 'frequency_of_alcohol_consumption', 'gender', 'histologic_grading_tier_category', 'histological_type', 'histological_type_other', 'history_of_chronic_pancreatitis', 'history_of_diabetes', 'history_of_neoadjuvant_treatment', 'icd_10', 'icd_o_3_histology', 'icd_o_3_site', 'informed_consent_verified', 'init_pathology_dx_method_other', 'initial_pathologic_diagnosis_method', 'initial_weight', 'intermediate_dimension', 'is_ffpe', 'longest_dimension', 'lost_follow_up', 'lymph_node_examined_count', 'maximum_tumor_dimension', 'neoplasm_histologic_grade', 'new_neoplasm_event_occurrence_anatomic_site', 'new_neoplasm_event_type', 'new_neoplasm_occurrence_anatomic_site_text', 'new_tumor_event_additional_surgery_procedure', 'new_tumor_event_after_initial_treatment', 'number_of_lymphnodes_positive_by_he', 'number_of_lymphnodes_positive_by_ihc', 'number_pack_years_smoked', 'oct_embedded', 'other_dx', 'pathologic_M', 'pathologic_N', 'pathologic_T', 'pathologic_stage', 'pathology_report_file_name', 'patient_death_reason', 'patient_id', 'person_neoplasm_cancer_status', 'primary_lymph_node_presentation_assessment', 'primary_therapy_outcome_success', 'progression_determined_by', 'radiation_therapy', 'relative_cancer_type', 'residual_disease_post_new_tumor_event_margin_status', 'residual_tumor', 'sample_type', 'sample_type_id', 'shortest_dimension', 'source_of_patient_death_reason', 'stopped_smoking_year', 'surgery_performed_type', 'system_version', 'targeted_molecular_therapy', 'tissue_prospective_collection_indicator', 'tissue_retrospective_collection_indicator', 'tissue_source_site', 'tobacco_smoking_history', 'tumor_tissue_site', 'tumor_type', 'vial_number', 'vital_status', 'year_of_initial_pathologic_diagnosis', 'year_of_tobacco_smoking_onset', '_GENOMIC_ID_TCGA_PAAD_mutation_bcgsc_gene', '_GENOMIC_ID_TCGA_PAAD_exp_HiSeqV2_PANCAN', '_GENOMIC_ID_TCGA_PAAD_gistic2', '_GENOMIC_ID_TCGA_PAAD_mutation_ucsc_maf_gene', '_GENOMIC_ID_TCGA_PAAD_exp_HiSeqV2', '_GENOMIC_ID_TCGA_PAAD_mutation_curated_broad_gene', '_GENOMIC_ID_TCGA_PAAD_exp_HiSeqV2_exon', '_GENOMIC_ID_TCGA_PAAD_mutation_bcm_gene', '_GENOMIC_ID_TCGA_PAAD_RPPA', '_GENOMIC_ID_TCGA_PAAD_hMethyl450', '_GENOMIC_ID_TCGA_PAAD_mutation', '_GENOMIC_ID_TCGA_PAAD_PDMRNAseq', '_GENOMIC_ID_TCGA_PAAD_PDMRNAseqCNV', '_GENOMIC_ID_TCGA_PAAD_mutation_broad_gene', '_GENOMIC_ID_TCGA_PAAD_gistic2thd', '_GENOMIC_ID_data/public/TCGA/PAAD/miRNA_HiSeq_gene', '_GENOMIC_ID_TCGA_PAAD_miRNA_HiSeq', '_GENOMIC_ID_TCGA_PAAD_exp_HiSeqV2_percentile']\n" ] } ], "source": [ "# Step 1: Find the directory corresponding to Pancreatic Cancer\n", "import os\n", "\n", "# List all directories in TCGA root directory\n", "tcga_dirs = os.listdir(tcga_root_dir)\n", "\n", "# Find the directory that matches our trait: Pancreatic_Cancer\n", "pancreatic_dirs = [dir_name for dir_name in tcga_dirs if \"pancreatic\" in dir_name.lower()]\n", "\n", "if not pancreatic_dirs:\n", " print(f\"No matching directory found for trait: {trait}\")\n", " # Record that this trait is not available and exit\n", " validate_and_save_cohort_info(\n", " is_final=False,\n", " cohort=\"TCGA\",\n", " info_path=json_path,\n", " is_gene_available=False,\n", " is_trait_available=False\n", " )\n", "else:\n", " # Select the most relevant directory\n", " selected_dir = pancreatic_dirs[0] # Should be 'TCGA_Pancreatic_Cancer_(PAAD)'\n", " cohort_dir = os.path.join(tcga_root_dir, selected_dir)\n", " \n", " # Step 2: Get file paths for clinical and genetic data\n", " clinical_file_path, genetic_file_path = tcga_get_relevant_filepaths(cohort_dir)\n", " \n", " # Step 3: Load the files\n", " clinical_df = pd.read_csv(clinical_file_path, sep='\\t', index_col=0)\n", " genetic_df = pd.read_csv(genetic_file_path, sep='\\t', index_col=0)\n", " \n", " # Step 4: Print column names of clinical data\n", " print(\"Clinical data columns:\")\n", " print(clinical_df.columns.tolist())\n" ] }, { "cell_type": "markdown", "id": "72dc2788", "metadata": {}, "source": [ "### Step 2: Find Candidate Demographic Features" ] }, { "cell_type": "code", "execution_count": 3, "id": "0c46918d", "metadata": { "execution": { "iopub.execute_input": "2025-03-25T06:06:56.692109Z", "iopub.status.busy": "2025-03-25T06:06:56.691965Z", "iopub.status.idle": "2025-03-25T06:06:56.701328Z", "shell.execute_reply": "2025-03-25T06:06:56.700859Z" } }, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "TCGA root directory exists: True\n", "Available directories: ['TCGA_Liver_Cancer_(LIHC)', 'TCGA_Lower_Grade_Glioma_(LGG)', 'TCGA_lower_grade_glioma_and_glioblastoma_(GBMLGG)', 'TCGA_Lung_Adenocarcinoma_(LUAD)', 'TCGA_Lung_Cancer_(LUNG)', 'TCGA_Lung_Squamous_Cell_Carcinoma_(LUSC)', 'TCGA_Melanoma_(SKCM)', 'TCGA_Mesothelioma_(MESO)', 'TCGA_Ocular_melanomas_(UVM)', 'TCGA_Ovarian_Cancer_(OV)', 'TCGA_Pancreatic_Cancer_(PAAD)', 'TCGA_Pheochromocytoma_Paraganglioma_(PCPG)', 'TCGA_Prostate_Cancer_(PRAD)', 'TCGA_Rectal_Cancer_(READ)', 'TCGA_Sarcoma_(SARC)', 'TCGA_Stomach_Cancer_(STAD)', 'TCGA_Testicular_Cancer_(TGCT)', 'TCGA_Thymoma_(THYM)', 'TCGA_Thyroid_Cancer_(THCA)', 'TCGA_Uterine_Carcinosarcoma_(UCS)', '.DS_Store', 'CrawlData.ipynb', 'TCGA_Acute_Myeloid_Leukemia_(LAML)', 'TCGA_Adrenocortical_Cancer_(ACC)', 'TCGA_Bile_Duct_Cancer_(CHOL)', 'TCGA_Bladder_Cancer_(BLCA)', 'TCGA_Breast_Cancer_(BRCA)', 'TCGA_Cervical_Cancer_(CESC)', 'TCGA_Colon_and_Rectal_Cancer_(COADREAD)', 'TCGA_Colon_Cancer_(COAD)', 'TCGA_Endometrioid_Cancer_(UCEC)', 'TCGA_Esophageal_Cancer_(ESCA)', 'TCGA_Glioblastoma_(GBM)', 'TCGA_Head_and_Neck_Cancer_(HNSC)', 'TCGA_Kidney_Chromophobe_(KICH)', 'TCGA_Kidney_Clear_Cell_Carcinoma_(KIRC)', 'TCGA_Kidney_Papillary_Cell_Carcinoma_(KIRP)', 'TCGA_Large_Bcell_Lymphoma_(DLBC)']\n", "Age columns preview:\n", "{'age_at_initial_pathologic_diagnosis': [65, 48, 75, 71, 70], 'days_to_birth': [-23962, -17794, -27600, -26028, -25920]}\n", "Gender columns preview:\n", "{'gender': ['MALE', 'MALE', 'MALE', 'MALE', 'FEMALE']}\n" ] } ], "source": [ "# Identify candidate age and gender columns\n", "candidate_age_cols = ['age_at_initial_pathologic_diagnosis', 'days_to_birth']\n", "candidate_gender_cols = ['gender']\n", "\n", "# First check if the directory exists and what subdirectories are available\n", "import os\n", "print(f\"TCGA root directory exists: {os.path.exists(tcga_root_dir)}\")\n", "if os.path.exists(tcga_root_dir):\n", " print(\"Available directories:\", os.listdir(tcga_root_dir))\n", "\n", "# Using the full directory name for pancreatic cancer\n", "tcga_dir = os.path.join(tcga_root_dir, \"TCGA_Pancreatic_Cancer_(PAAD)\")\n", "\n", "# Check if the directory exists\n", "if os.path.exists(tcga_dir):\n", " clinical_file_path, _ = tcga_get_relevant_filepaths(tcga_dir)\n", " clinical_df = pd.read_csv(clinical_file_path, index_col=0, sep='\\t')\n", "\n", " # Extract and preview age columns\n", " if candidate_age_cols:\n", " age_preview = {}\n", " for col in candidate_age_cols:\n", " if col in clinical_df.columns:\n", " age_preview[col] = clinical_df[col].head(5).tolist()\n", " print(\"Age columns preview:\")\n", " print(age_preview)\n", "\n", " # Extract and preview gender columns\n", " if candidate_gender_cols:\n", " gender_preview = {}\n", " for col in candidate_gender_cols:\n", " if col in clinical_df.columns:\n", " gender_preview[col] = clinical_df[col].head(5).tolist()\n", " print(\"Gender columns preview:\")\n", " print(gender_preview)\n", "else:\n", " print(f\"Directory not found: {tcga_dir}\")\n", " print(\"Please ensure the correct directory structure and naming convention.\")\n" ] }, { "cell_type": "markdown", "id": "2b9086b8", "metadata": {}, "source": [ "### Step 3: Select Demographic Features" ] }, { "cell_type": "code", "execution_count": 4, "id": "fcc650d2", "metadata": { "execution": { "iopub.execute_input": "2025-03-25T06:06:56.702513Z", "iopub.status.busy": "2025-03-25T06:06:56.702407Z", "iopub.status.idle": "2025-03-25T06:06:56.706007Z", "shell.execute_reply": "2025-03-25T06:06:56.705610Z" } }, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "Chosen age column: age_at_initial_pathologic_diagnosis\n", "Chosen gender column: gender\n" ] } ], "source": [ "# Examining the age columns\n", "age_col = None\n", "if 'age_at_initial_pathologic_diagnosis' in {'age_at_initial_pathologic_diagnosis': [65, 48, 75, 71, 70], 'days_to_birth': [-23962, -17794, -27600, -26028, -25920]}:\n", " # This column has appropriate values directly representing age in years\n", " age_col = 'age_at_initial_pathologic_diagnosis'\n", "elif 'days_to_birth' in {'age_at_initial_pathologic_diagnosis': [65, 48, 75, 71, 70], 'days_to_birth': [-23962, -17794, -27600, -26028, -25920]}:\n", " # This column has negative values representing days since birth (can be converted to years)\n", " age_col = 'days_to_birth'\n", "\n", "# Examining the gender columns\n", "gender_col = None\n", "if 'gender' in {'gender': ['MALE', 'MALE', 'MALE', 'MALE', 'FEMALE']} and len({'gender': ['MALE', 'MALE', 'MALE', 'MALE', 'FEMALE']}) > 0:\n", " # This column has appropriate gender values\n", " gender_col = 'gender'\n", "\n", "# Print chosen columns\n", "print(f\"Chosen age column: {age_col}\")\n", "print(f\"Chosen gender column: {gender_col}\")\n" ] }, { "cell_type": "markdown", "id": "efa0aa9e", "metadata": {}, "source": [ "### Step 4: Feature Engineering and Validation" ] }, { "cell_type": "code", "execution_count": 5, "id": "3555427c", "metadata": { "execution": { "iopub.execute_input": "2025-03-25T06:06:56.707128Z", "iopub.status.busy": "2025-03-25T06:06:56.707015Z", "iopub.status.idle": "2025-03-25T06:07:05.417525Z", "shell.execute_reply": "2025-03-25T06:07:05.416951Z" } }, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "Saved clinical data with 196 samples\n", "After normalization: 19848 genes remaining\n" ] }, { "name": "stdout", "output_type": "stream", "text": [ "Saved normalized gene expression data\n", "Linked data shape: (183, 19851) (samples x features)\n" ] }, { "name": "stdout", "output_type": "stream", "text": [ "After handling missing values, data shape: (183, 19851)\n", "For the feature 'Pancreatic_Cancer', the least common label is '0' with 4 occurrences. This represents 2.19% of the dataset.\n", "The distribution of the feature 'Pancreatic_Cancer' in this dataset is severely biased.\n", "\n", "Quartiles for 'Age':\n", " 25%: 57.0\n", " 50% (Median): 65.0\n", " 75%: 73.0\n", "Min: 35\n", "Max: 88\n", "The distribution of the feature 'Age' in this dataset is fine.\n", "\n", "For the feature 'Gender', the least common label is '0' with 82 occurrences. This represents 44.81% of the dataset.\n", "The distribution of the feature 'Gender' in this dataset is fine.\n", "\n", "Dataset was determined to be unusable and was not saved.\n" ] } ], "source": [ "# Step 1: Extract and standardize clinical features\n", "# Define the cohort directory\n", "selected_dir = 'TCGA_Pancreatic_Cancer_(PAAD)'\n", "cohort_dir = os.path.join(tcga_root_dir, selected_dir)\n", "\n", "# Get the file paths for clinical and genetic data\n", "clinical_file_path, genetic_file_path = tcga_get_relevant_filepaths(cohort_dir)\n", "\n", "# Load the data\n", "clinical_df = pd.read_csv(clinical_file_path, sep='\\t', index_col=0)\n", "genetic_df = pd.read_csv(genetic_file_path, sep='\\t', index_col=0)\n", "\n", "# Extract standardized clinical features (Pancreatic_Cancer as the trait)\n", "# In TCGA data, we use sample IDs to determine tumor vs. normal\n", "clinical_features = tcga_select_clinical_features(\n", " clinical_df, \n", " trait=\"Pancreatic_Cancer\",\n", " age_col=age_col, \n", " gender_col=gender_col\n", ")\n", "\n", "# Save the clinical data to out_clinical_data_file\n", "os.makedirs(os.path.dirname(out_clinical_data_file), exist_ok=True)\n", "clinical_features.to_csv(out_clinical_data_file)\n", "print(f\"Saved clinical data with {len(clinical_features)} samples\")\n", "\n", "# Step 2: Normalize gene symbols in gene expression data\n", "# Transpose to get genes as rows\n", "gene_df = genetic_df\n", "\n", "# Normalize gene symbols using NCBI Gene database synonyms\n", "normalized_gene_df = normalize_gene_symbols_in_index(gene_df)\n", "print(f\"After normalization: {len(normalized_gene_df)} genes remaining\")\n", "\n", "# Save the normalized gene expression data\n", "os.makedirs(os.path.dirname(out_gene_data_file), exist_ok=True)\n", "normalized_gene_df.to_csv(out_gene_data_file)\n", "print(f\"Saved normalized gene expression data\")\n", "\n", "# Step 3: Link clinical and genetic data\n", "# Merge clinical features with genetic expression data\n", "linked_data = clinical_features.join(normalized_gene_df.T, how='inner')\n", "print(f\"Linked data shape: {linked_data.shape} (samples x features)\")\n", "\n", "# Step 4: Handle missing values\n", "cleaned_data = handle_missing_values(linked_data, trait_col=\"Pancreatic_Cancer\")\n", "print(f\"After handling missing values, data shape: {cleaned_data.shape}\")\n", "\n", "# Step 5: Determine if trait or demographics are severely biased\n", "trait_biased, cleaned_data = judge_and_remove_biased_features(cleaned_data, trait=\"Pancreatic_Cancer\")\n", "\n", "# Step 6: Validate data quality and save cohort information\n", "note = \"The dataset contains gene expression data along with clinical information for pancreatic cancer patients.\"\n", "is_usable = validate_and_save_cohort_info(\n", " is_final=True,\n", " cohort=\"TCGA\",\n", " info_path=json_path,\n", " is_gene_available=True,\n", " is_trait_available=True,\n", " is_biased=trait_biased,\n", " df=cleaned_data,\n", " note=note\n", ")\n", "\n", "# Step 7: Save the linked data if usable\n", "if is_usable:\n", " os.makedirs(os.path.dirname(out_data_file), exist_ok=True)\n", " cleaned_data.to_csv(out_data_file)\n", " print(f\"Saved usable linked data to {out_data_file}\")\n", "else:\n", " print(\"Dataset was determined to be unusable and was not saved.\")" ] } ], "metadata": { "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.10.16" } }, "nbformat": 4, "nbformat_minor": 5 }