diff --git a/misc/catvar_ndjsonifier.py b/misc/catvar_ndjsonifier.py
new file mode 100644
index 0000000..eed0776
--- /dev/null
+++ b/misc/catvar_ndjsonifier.py
@@ -0,0 +1,94 @@
+import enum
+import os
+import pathlib
+import gzip
+import csv
+import json
+import sys
+import time
+
+import clinvar_gk_pilot
+from clinvar_gk_pilot.gcs import (
+    list_blobs,
+    already_downloaded,
+    download_to_local_file,
+    _local_file_path_for,
+)
+
+# increase csv field size limit
+csv.field_size_limit(sys.maxsize)
+
+
+bucket_name = "clinvar-gk-pilot"
+
+# folder_path = "2024-04-07/dev/catvar_output_v2/"
+# output_file_name = "combined-catvar_output.ndjson.gz"
+
+folder_path = "2024-04-07/dev/scv_output_v2/"
+output_file_name = "combined-scv_output.ndjson.gz"
+
+blob_uris = list_blobs(bucket_name, folder_path)
+blob_uris = [blob for blob in blob_uris if not blob.endswith("/")]
+for blob in blob_uris:
+    print(blob)
+local_paths = []
+# Download all files
+print("Downloading files...")
+expected_local_paths = [_local_file_path_for(blob) for blob in blob_uris]
+for expected_local_path, blob_uri in zip(expected_local_paths, blob_uris):
+    if not os.path.exists(expected_local_path):
+        local_paths.append(download_to_local_file(blob_uri))
+    else:
+        local_paths.append(expected_local_path)
+# for blob in blob_uris:
+#     if not already_downloaded(blob):
+#         print(f"Downloading {blob}...")
+#         local_paths.append(download_to_local_file(blob))
+#     else:
+#         print(f"Already downloaded {blob}")
+#         local_paths.append(_local_file_path_for(blob))
+
+# sys.exit(0)
+
+output_lines_count = 0
+last_logged_output_count_time = time.time()
+last_logged_output_count_value = 0
+
+
+with gzip.open(output_file_name, "wt", compresslevel=9) as f_out:
+    for file_idx, file_path in enumerate(local_paths):
+        print(f"Reading {file_path} ({file_idx + 1}/{len(local_paths)})...")
+        try:
+            with gzip.open(file_path, "rt") as f_in:
+                reader = csv.reader(f_in)
+                for i, row in enumerate(reader):
+                    assert (
+                        len(row) == 1
+                    ), f"row {i} of file {file_path} had more than 1 column! ({len(row)} columns) {row}"
+                    obj = json.loads(row[0])
+                    assert (
+                        len(obj) == 1
+                    ), f"row {i} of file {file_path} had more than 1 key! ({len(obj)} keys) {obj}"
+
+                    # Write key and value
+                    key, value = list(obj.items())[0]
+                    assert isinstance(
+                        key, str
+                    ), f"key {key} on line {i} of file {file_path} is not a string!"
+
+                    f_out.write(json.dumps(value))
+                    f_out.write("\n")
+                    output_lines_count += 1
+                    now = time.time()
+                    if now - last_logged_output_count_time > 5:
+                        new_lines = output_lines_count - last_logged_output_count_value
+                        print(
+                            f"Outputs written: {output_lines_count} ({new_lines/5:.2f} lines/s)"
+                        )
+                        last_logged_output_count_value = output_lines_count
+                        last_logged_output_count_time = now
+        except Exception as e:
+            print(f"Exception while reading {file_path}: {e}")
+            raise e
+
+print(f"Wrote {output_file_name} successfully!")
diff --git a/misc/combination/Dockerfile b/misc/combination/Dockerfile
new file mode 100644
index 0000000..09c443d
--- /dev/null
+++ b/misc/combination/Dockerfile
@@ -0,0 +1,23 @@
+# Use a smaller base image
+FROM python:3.9-slim AS build
+WORKDIR /app
+
+# Copy requirements file and install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Final image
+FROM python:3.9-slim
+WORKDIR /app
+
+# Copy dependencies from the build stage
+COPY --from=build /usr/local/lib/python3.9/site-packages/ /usr/local/lib/python3.9/site-packages/
+
+# Copy the application code
+COPY combine-files.py .
+
+# Set environment variables if needed
+ENV PYTHONUNBUFFERED=1
+
+# Command to run the Flask app
+CMD ["python","combine-files.py"]
diff --git a/misc/combination/combine-files.py b/misc/combination/combine-files.py
new file mode 100644
index 0000000..2e54d75
--- /dev/null
+++ b/misc/combination/combine-files.py
@@ -0,0 +1,191 @@
+import csv
+from dataclasses import dataclass
+import json
+import os
+import re
+import gzip
+import sys
+import time
+# from flask import Flask, request, jsonify
+from google.cloud import storage
+
+# increase csv field size limit
+csv.field_size_limit(sys.maxsize)
+
+# app = Flask(__name__)
+
+
+@dataclass()
+class Env:
+    bucket_name: str
+    folder_path: str
+    file_pattern: str
+    output_file_path: str
+    output_blob_path: str
+
+    def __init__(self):
+        self.bucket_name = os.getenv("bucket_name")
+        self.folder_path = os.getenv("folder_path")
+        self.file_pattern = os.getenv("file_pattern")
+        self.output_file_path = os.getenv("output_file_path")
+        self.output_blob_path = os.getenv("output_blob_path")
+
+
+def _open(file_path, mode):
+    if file_path.startswith("gs://"):
+        return storage.open(file_path, mode)
+
+    if file_path.endswith(".gz"):
+        return gzip.open(file_path, mode)
+    return open(file_path, mode)
+
+
+class NDJson:
+
+    def __init__(self, file_path):
+        self.file_path = file_path
+
+    def __enter__(self):
+        self.file = open(self.file_path, "w")
+        self.file.write("[\n")
+        return self
+
+    def write(self, obj):
+        self.file.write(json.dumps(obj) + "\n")
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.file.write("]\n")
+        self.file.close()
+
+
+def combine_files(bucket_name, folder_path, file_pattern, output_file_path, output_blob_path=None):
+
+    # Initialize Google Cloud Storage client
+    client = storage.Client()
+
+    # Get the bucket
+    bucket = client.get_bucket(bucket_name)
+
+    if bucket is None:
+        print(f"{bucket_name} bucket not found.")
+        return
+
+    # List all files in the folder matching the file pattern
+    blobs = bucket.list_blobs(prefix=folder_path)
+
+    if blobs is None:
+        print(f"No blobs found in {folder_path}.")
+        return
+
+    files_to_combine = [blob.name for blob in blobs if re.match(
+        file_pattern, os.path.basename(blob.name))]
+
+    if len(files_to_combine) == 0:
+        print(f"No files found matching pattern {file_pattern} to combine.")
+        return
+
+    # Logging stuff
+    output_keys_count = 0
+    last_logged_output_count_time = time.time()
+    last_logged_output_count_value = 0
+
+    with gzip.open(output_file_path, 'wt') as f_out:
+        f_out.write("{\n")
+
+        # Iterate over each file
+        for file_name in files_to_combine:
+            print(f"Processing file: {file_name}")
+            blob = bucket.get_blob(file_name)
+            with gzip.open(blob.open("rb"), 'rt') as f_in:
+                reader = csv.reader(f_in)
+                is_first_row = True
+                for i, row in enumerate(reader):
+                    assert (
+                        len(row) == 1
+                    ), f"row {i} of file {file_name} had more than 1 column! ({len(row)} columns) {row}"
+                    obj = json.loads(row[0])
+                    assert (
+                        len(obj) == 1
+                    ), f"row {i} of file {file_name} had more than 1 key! ({len(obj)} keys) {obj}"
+
+                    # Write key and value
+                    key, value = list(obj.items())[0]
+                    assert isinstance(
+                        key, str
+                    ), f"key {key} on line {i} of file {file_name} is not a string!"
+
+                    if not is_first_row:
+                        f_out.write(",\n")
+                    f_out.write("    ")
+                    f_out.write(f'"{key}": ')
+                    f_out.write(json.dumps(value))
+                    is_first_row = False
+
+                    # Progress logging
+                    output_keys_count += 1
+                    now = time.time()
+                    if now - last_logged_output_count_time > 5:
+                        new_lines = output_keys_count - last_logged_output_count_value
+                        print(
+                            f"Output keys written: {output_keys_count} ({new_lines/5:.2f} lines/s)"
+                        )
+                        last_logged_output_count_value = output_keys_count
+                        last_logged_output_count_time = now
+
+        f_out.write("\n}\n")
+
+    print(f"Combined file {output_file_path} created successfully.")
+
+    if output_blob_path:
+        # Upload the combined file to the output_blob_uri
+        blob = bucket.blob(output_blob_path)
+        blob.upload_from_filename(output_file_path)
+
+        print(
+            f"Combined file {output_file_path} uploaded to {output_blob_path}."
+        )
+
+
+# @app.route('/')
+# def combine_files_http():
+#     # Get query parameters
+#     bucket_name = request.args.get('bucket_name')
+#     folder_path = request.args.get('folder_path')
+#     file_pattern = request.args.get('file_pattern')
+#     output_file_path = request.args.get('output_file_path')
+#     output_blob_path = request.args.get('output_blob_path', default=None)
+
+#     print(f"bucket_name: {bucket_name}, "
+#           f"folder_path: {folder_path}, "
+#           f"file_pattern: {file_pattern}, "
+#           f"output_file_path: {output_file_path}, "
+#           f"output_blob_path: {output_blob_path}")
+
+#     # Call the function to combine files
+#     combine_files(bucket_name, folder_path, file_pattern,
+#                   output_file_path, output_blob_path)
+
+#     ret = {'message': 'Combined file created successfully.'}
+#     if output_blob_path:
+#         ret['output_blob_path'] = f"gs://{bucket_name}/{output_blob_path}"
+
+#     print(json.dumps(ret))
+#     return jsonify(ret)
+
+
+if __name__ == '__main__':
+    # app.run(debug=True, host="0.0.0.0")
+    env = Env()
+    print(f"bucket_name: {env.bucket_name}, "
+          f"folder_path: {env.folder_path}, "
+          f"file_pattern: {env.file_pattern}, "
+          f"output_file_path: {env.output_file_path}, "
+          f"output_blob_path: {env.output_blob_path}")
+
+    combine_files(
+        bucket_name=env.bucket_name,
+        folder_path=env.folder_path,
+        file_pattern=env.file_pattern,
+        output_file_path=env.output_file_path,
+        output_blob_path=env.output_blob_path
+    )
diff --git a/misc/combination/requirements.txt b/misc/combination/requirements.txt
new file mode 100644
index 0000000..3744fab
--- /dev/null
+++ b/misc/combination/requirements.txt
@@ -0,0 +1,2 @@
+Flask
+google-cloud-storage
\ No newline at end of file
diff --git a/misc/splitlines.py b/misc/splitlines.py
new file mode 100644
index 0000000..8be706d
--- /dev/null
+++ b/misc/splitlines.py
@@ -0,0 +1,40 @@
+import argparse
+import contextlib
+import gzip
+import os
+import shutil
+import sys
+
+
+def split(input_filename, output_directory, partitions):
+    with gzip.open(input_filename, "rt", encoding="utf-8") as f:
+        filenames = [f"part-{i}.ndjson.gz" for i in range(partitions)]
+        file_paths = [
+            os.path.join(output_directory, filename) for filename in filenames
+        ]
+        with contextlib.ExitStack() as stack:
+            files = [
+                stack.enter_context(gzip.open(file_path, "wt"))
+                for file_path in file_paths
+            ]
+            for i, line in enumerate(f):
+                file_idx = i % partitions
+                files[file_idx].write(line)
+
+
+def main(args=sys.argv[1:]):
+    parser = argparse.ArgumentParser()
+    parser.add_argument("input_filename")
+    parser.add_argument("output_directory")
+    parser.add_argument("partitions", type=int)
+    args = parser.parse_args(args)
+
+    if os.path.exists(args.output_directory):
+        shutil.rmtree(args.output_directory)
+    os.makedirs(args.output_directory, exist_ok=True)
+
+    return split(args.input_filename, args.output_directory, args.partitions)
+
+
+if __name__ == "__main__":
+    main()