diff --git a/graphql-api/src/graphql/types/gene.graphql b/graphql-api/src/graphql/types/gene.graphql
index 49fff58c0..e41c6bda5 100644
--- a/graphql-api/src/graphql/types/gene.graphql
+++ b/graphql-api/src/graphql/types/gene.graphql
@@ -7,8 +7,7 @@ type GeneTranscript {
   stop: Int!
   exons: [Exon!]!
   strand: String!
-
-  gtex_tissue_expression: [GtexTissue]
+  gtex_tissue_expression: [GtexTissue!]
 }
 
 type ManeSelectTranscript {
diff --git a/graphql-api/src/graphql/types/tissue-expression/gtex-tissue-expression.graphql b/graphql-api/src/graphql/types/tissue-expression/gtex-tissue-expression.graphql
index e64313a5a..9aa9a2b98 100644
--- a/graphql-api/src/graphql/types/tissue-expression/gtex-tissue-expression.graphql
+++ b/graphql-api/src/graphql/types/tissue-expression/gtex-tissue-expression.graphql
@@ -1,61 +1,4 @@
-# type GtexTissueExpression {
-#   adipose_subcutaneous: Float!
-#   adipose_visceral_omentum: Float!
-#   adrenal_gland: Float!
-#   artery_aorta: Float!
-#   artery_coronary: Float!
-#   artery_tibial: Float!
-#   bladder: Float!
-#   brain_amygdala: Float!
-#   brain_anterior_cingulate_cortex_ba24: Float!
-#   brain_caudate_basal_ganglia: Float!
-#   brain_cerebellar_hemisphere: Float!
-#   brain_cerebellum: Float!
-#   brain_cortex: Float!
-#   brain_frontal_cortex_ba9: Float!
-#   brain_hippocampus: Float!
-#   brain_hypothalamus: Float!
-#   brain_nucleus_accumbens_basal_ganglia: Float!
-#   brain_putamen_basal_ganglia: Float!
-#   brain_spinal_cord_cervical_c_1: Float!
-#   brain_substantia_nigra: Float!
-#   breast_mammary_tissue: Float!
-#   cells_ebv_transformed_lymphocytes: Float!
-#   cells_transformed_fibroblasts: Float
-#   cells_cultured_fibroblasts: Float
-#   cervix_ectocervix: Float!
-#   cervix_endocervix: Float!
-#   colon_sigmoid: Float!
-#   colon_transverse: Float!
-#   esophagus_gastroesophageal_junction: Float!
-#   esophagus_mucosa: Float!
-#   esophagus_muscularis: Float!
-#   fallopian_tube: Float!
-#   heart_atrial_appendage: Float!
-#   heart_left_ventricle: Float!
-#   kidney_cortex: Float!
-#   liver: Float!
-#   lung: Float!
-#   minor_salivary_gland: Float!
-#   muscle_skeletal: Float!
-#   nerve_tibial: Float!
-#   ovary: Float!
-#   pancreas: Float!
-#   pituitary: Float!
-#   prostate: Float!
-#   skin_not_sun_exposed_suprapubic: Float!
-#   skin_sun_exposed_lower_leg: Float!
-#   small_intestine_terminal_ileum: Float!
-#   spleen: Float!
-#   stomach: Float!
-#   testis: Float!
-#   thyroid: Float!
-#   uterus: Float!
-#   vagina: Float!
-#   whole_blood: Float!
-# }
-
 type GtexTissue {
-  tissue: String
-  value: Float
+  tissue: String!
+  value: Float!
 }
diff --git a/graphql-api/src/graphql/types/tissue-expression/pext.graphql b/graphql-api/src/graphql/types/tissue-expression/pext.graphql
index 2353004fc..8c1dce3e4 100644
--- a/graphql-api/src/graphql/types/tissue-expression/pext.graphql
+++ b/graphql-api/src/graphql/types/tissue-expression/pext.graphql
@@ -1,60 +1,3 @@
-# type PextRegionTissueValues {
-#   adipose_subcutaneous: Float!
-#   adipose_visceral_omentum: Float!
-#   adrenal_gland: Float!
-#   artery_aorta: Float!
-#   artery_coronary: Float!
-#   artery_tibial: Float!
-#   bladder: Float!
-#   brain_amygdala: Float!
-#   brain_anterior_cingulate_cortex_ba24: Float!
-#   brain_caudate_basal_ganglia: Float!
-#   brain_cerebellar_hemisphere: Float!
-#   brain_cerebellum: Float!
-#   brain_cortex: Float!
-#   brain_frontal_cortex_ba9: Float!
-#   brain_hippocampus: Float!
-#   brain_hypothalamus: Float!
-#   brain_nucleus_accumbens_basal_ganglia: Float!
-#   brain_putamen_basal_ganglia: Float!
-#   brain_spinal_cord_cervical_c_1: Float!
-#   brain_substantia_nigra: Float!
-#   breast_mammary_tissue: Float!
-#   cells_ebv_transformed_lymphocytes: Float!
-#   cells_transformed_fibroblasts: Float
-#   cells_cultured_fibroblasts: Float
-#   cervix_ectocervix: Float!
-#   cervix_endocervix: Float!
-#   colon_sigmoid: Float!
-#   colon_transverse: Float!
-#   esophagus_gastroesophageal_junction: Float!
-#   esophagus_mucosa: Float!
-#   esophagus_muscularis: Float!
-#   fallopian_tube: Float!
-#   heart_atrial_appendage: Float!
-#   heart_left_ventricle: Float!
-#   kidney_cortex: Float!
-#   liver: Float!
-#   lung: Float!
-#   minor_salivary_gland: Float!
-#   muscle_skeletal: Float!
-#   nerve_tibial: Float!
-#   ovary: Float!
-#   pancreas: Float!
-#   pituitary: Float!
-#   prostate: Float!
-#   skin_not_sun_exposed_suprapubic: Float!
-#   skin_sun_exposed_lower_leg: Float!
-#   small_intestine_terminal_ileum: Float!
-#   spleen: Float!
-#   stomach: Float!
-#   testis: Float!
-#   thyroid: Float!
-#   uterus: Float!
-#   vagina: Float!
-#   whole_blood: Float!
-# }
-
 type PextRegionTissue {
   tissue: String
   value: Float
@@ -64,8 +7,7 @@ type PextRegion {
   start: Int!
   stop: Int!
   mean: Float!
-  # tissues: PextRegionTissueValues
-  tissues: [PextRegionTissue]
+  tissues: [PextRegionTissue!]!
 }
 
 type Pext {