diff --git a/genotype_array_qc/README.md b/genotype_array_qc/README.md
index b245180..2902853 100644
--- a/genotype_array_qc/README.md
+++ b/genotype_array_qc/README.md
@@ -549,28 +549,45 @@ Parameters:
 
 
 <details>
-<summary>15. Remove samples based on relatedness</summary>
+<summary>15. Remove samples based on relatedness (optional)</summary>
 
 Sample command:
 ``` shell
+plink \
+    --bfile [INPUT_BED_BIM_FAM_PREFIX] \
+    --remove [REMOVE_LIST] \
+    --make-bed \
+    --out [OUTPUT_BED_BIM_FAM_PREFIX]
 ```
 
 Input Files:
 
 | FILE | DESCRIPTION |
 | --- | --- |
+| `[INPUT_BED_BIM_FAM_PREFIX].bed` | PLINK format bed file for input genotypes |
+| `[INPUT_BED_BIM_FAM_PREFIX].bim` | PLINK format bim file for input genotypes |
+| `[INPUT_BED_BIM_FAM_PREFIX].fam` | PLINK format fam file for input genotypes |
+| `[REMOVE_LIST]` | List of subjects to remove |
 
 
 Output Files:
 
 | FILE | DESCRIPTION |
 | --- | --- |
+| `[OUTPUT_BED_BIM_FAM_PREFIX].bed` | PLINK format bed file for output genotypes |
+| `[OUTPUT_BED_BIM_FAM_PREFIX].bim` | PLINK format bim file for output genotypes |
+| `[OUTPUT_BED_BIM_FAM_PREFIX].fam` | PLINK format fam file for output genotypes |
+| `[OUTPUT_BED_BIM_FAM_PREFIX].log` | PLINK log file |
 
 
 Parameters:
 
 | PARAMETER | DESCRIPTION |
 | --- | --- |
+| `--bfile [INPUT_BED_BIM_FAM_PREFIX]` | Prefix for input genotypes in PLINK bed/bim/fam format |
+| `--remove [REMOVE_LIST]` | List of subjects to remove |
+| `--make-bed` | Flag indicating to generate genotypes in PLINK bed/bim/fam format |
+| `--out [OUTPUT_BED_BIM_FAM_PREFIX]` | Prefix for output genotypes in PLINK bed/bim/fam format |
 </details>