diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/_metric_exporter/__init__.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/_metric_exporter/__init__.py
index df48a15a7bd..92aba2958c2 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/_metric_exporter/__init__.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/_metric_exporter/__init__.py
@@ -137,6 +137,7 @@ def _translate_data(
                     time_unix_nano=metric.point.time_unix_nano,
                     start_time_unix_nano=metric.point.start_time_unix_nano,
                     count=sum(metric.point.bucket_counts),
+                    sum=metric.point.sum,
                     bucket_counts=metric.point.bucket_counts,
                     explicit_bounds=metric.point.explicit_bounds,
                 )
diff --git a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/metrics/test_otlp_metrics_exporter.py b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/metrics/test_otlp_metrics_exporter.py
index 9c4bd860f51..9c00ee43408 100644
--- a/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/metrics/test_otlp_metrics_exporter.py
+++ b/exporter/opentelemetry-exporter-otlp-proto-grpc/tests/metrics/test_otlp_metrics_exporter.py
@@ -589,6 +589,7 @@ def test_translate_histogram(self):
                                                 start_time_unix_nano=1641946016139533244,
                                                 time_unix_nano=1641946016139533244,
                                                 count=5,
+                                                sum=67,
                                                 bucket_counts=[1, 4],
                                                 explicit_bounds=[10.0, 20.0],
                                                 exemplars=[],