update leaderboard test data overview

README.md

@@ -106,8 +106,37 @@ The dataset is released in tab-separated values (TSV, UTF-8 encoded) format.
 These reflect the present scope of published evidence and curation coverage. Future versions will progressively expand molecular features and strengthen patient-level annotations.
 
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+## Leaderboard Test Dataset Overview
 
-## Versioning & Updates
+We are excited to present a comprehensive biomedical dataset curated for advanced research and predictive modeling. This collection provides rich, multi-dimensional data across diverse cancer types, offering a solid foundation for developing robust machine learning models.
+
+### 📊 Key Statistics
+- **Patients**: 34 individuals
+- **Total Records**: 36,243 data points
+- **Average Data per Patient**: ~1,100 entries
+- **MHC Typing Variants**: 37 unique classifications
+
+### 🎯 Cancer Type Coverage
+The dataset encompasses **10 distinct cancer types**, providing broad representation across oncology domains:
+- **Breast Cancer**
+- **Clear Cell Renal Cell Carcinoma**
+- **Colorectal Adenocarcinoma**
+- **Glioblastoma (GBM)**
+- **Head & Neck SCC**
+- **Leukemia**
+- **NSCLC** (Non-Small Cell Lung Cancer)
+- **Ovarian Cancer**
+- **PDAC** (Pancreatic Ductal Adenocarcinoma)
+- **Skin Cutaneous Melanoma**
+
+### 🚀 Getting Started
+    The dataset is now available for download. We encourage researchers to explore the rich phenotypic and genotypic information contained within this collection. The balanced nature and comprehensive coverage make it ideal for developing predictive models that can generalize across multiple cancer types.
+
+    We look forward to seeing your innovative approaches and wish you the best of luck on the leaderboard! Your contributions will help advance our understanding of cancer immunology and improve patient outcomes.
+
+    *Happy analyzing!* 🔬📈
+
+### Versioning & Updates
 
 - **Current version: v0.2**  
   This release contains **257 curated positive neoantigen peptides**, covering **25 cancer types** and **46 unique HLA class I alleles**.