diff --git a/cellbase-lib/src/main/java/org/opencb/cellbase/lib/loader/LoadRunner.java b/cellbase-lib/src/main/java/org/opencb/cellbase/lib/loader/LoadRunner.java
index 3a6605c4f..f921403ff 100644
--- a/cellbase-lib/src/main/java/org/opencb/cellbase/lib/loader/LoadRunner.java
+++ b/cellbase-lib/src/main/java/org/opencb/cellbase/lib/loader/LoadRunner.java
@@ -21,6 +21,7 @@
 import org.opencb.cellbase.core.config.CellBaseConfiguration;
 import org.opencb.cellbase.core.exception.CellBaseException;
 import org.opencb.cellbase.core.models.DataRelease;
+import org.opencb.cellbase.lib.EtlCommons;
 import org.opencb.cellbase.lib.managers.DataReleaseManager;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -100,7 +101,9 @@ public void load(Path filePath, String data, int dataRelease, String field, Stri
         // protein_functional_prediction documents are extremely big. Increasing the batch size will probably
         // lead to an OutOfMemory error for this collection. Batch size can be much higher for the rest of
         // collections though
-        if (data.equals(PROTEIN_FUNCTIONAL_PREDICTION)) {
+        if (data.equals(PROTEIN_FUNCTIONAL_PREDICTION)
+                || data.equals(EtlCommons.PHARMACOGENOMICS_DATA)
+                || data.equals(EtlCommons.PUBMED_DATA)) {
             batchSize = 50;
         } else {
             batchSize = 200;
diff --git a/cellbase-lib/src/test/java/org/opencb/cellbase/lib/GenericMongoDBAdaptorTest.java b/cellbase-lib/src/test/java/org/opencb/cellbase/lib/GenericMongoDBAdaptorTest.java
index e5e804268..f316fdf07 100644
--- a/cellbase-lib/src/test/java/org/opencb/cellbase/lib/GenericMongoDBAdaptorTest.java
+++ b/cellbase-lib/src/test/java/org/opencb/cellbase/lib/GenericMongoDBAdaptorTest.java
@@ -47,6 +47,8 @@
 import java.util.List;
 import java.util.concurrent.ExecutionException;
 
+import static org.opencb.cellbase.lib.EtlCommons.PHARMACOGENOMICS_DATA;
+import static org.opencb.cellbase.lib.EtlCommons.PUBMED_DATA;
 import static org.opencb.cellbase.lib.db.MongoDBManager.DBNAME_SEPARATOR;
 
 /**
@@ -209,10 +211,10 @@ private void downloadAndPopulate() throws IOException, ExecutionException, Class
         loadData("clinical_variants", "clinical_variants", baseDir.resolve("clinical_variants.full.json.gz"));
 
         // pharmacogenomics.json.gz
-        loadData("pharmacogenomics", "pharmacogenomics", baseDir.resolve("pharmacogenomics/pharmacogenomics.json.gz"));
+        loadData(PHARMACOGENOMICS_DATA, PHARMACOGENOMICS_DATA, baseDir.resolve("pharmacogenomics/pharmacogenomics.json.gz"));
 
         // pubmed.json.gz
-        loadData("pubmed", "pubmed", baseDir.resolve("pubmed/pubmed.json.gz"));
+        loadData(PUBMED_DATA, PUBMED_DATA, baseDir.resolve("pubmed/pubmed.json.gz"));
 
         // Clean temporary dir
     }