Conditions list

The Generation Study will be testing babies for changes in genes linked to more than 200 rare genetic conditions.
These all meet a set of four principles that have guided our approach to choosing conditions. Find out more about our process.
As we learn more from the study and respond to emerging evidence and research, the list of conditions and gene changes we test for may change. Babies in the Generation Study will be tested for the conditions listed at the time they joined the study and will not be re-analysed if this list changes.
This list includes more than 200 individual conditions caused by genetic changes in around 500 different genes. The latest full list of conditions is provided in alphabetical order below.
Current list publication date: February 2025
Since early 2024, we have been reaching out to specialty clinical groups and patient organisations to consider any conditions that may require review or that have not been previously considered for inclusion in the study. These would need to meet our study’s four principles and follow the same approval process.
If you have any questions about the conditions tested in the study or wish to view previous versions of the list, please contact us via our Service Desk.
Conditions G-I
Condition group | Gene | Condition name (OMIM) |
Galactokinase deficiency with cataracts | GALK1 | Galactokinase deficiency with cataracts |
Galactosaemia | GALT | Galactosaemia |
Gastrointestinal defects and immunodeficiency syndrome | TTC7A | Gastrointestinal defects and immunodeficiency syndrome |
Generalised arterial calcification of infancy | ENPP1 | Arterial calcification, generalized, of infancy, 1 |
Generalised arterial calcification of infancy | ABCC6 | Generalized arterial calcification of infancy 2 |
Glanzmann thrombasthenia | ITGA2B | Glanzmann thrombasthenia 1 |
Glanzmann thrombasthenia | ITGB3 | Glanzmann thrombasthenia 2 |
Glucocorticoid deficiency | MC2R | MC2R familial glucocorticoid deficiency |
Glucocorticoid deficiency | MRAP | MRAP familial glucocorticoid deficiency type 2 |
Glucocorticoid deficiency | NNT | Glucocorticoid deficiency 4, with or without mineralocorticoid deficiency |
Glucose/galactose malabsorption | SLC5A1 | Glucose/galactose malabsorption |
GLUT1 deficiency syndrome | SLC2A1 | GLUT1 deficiency syndrome-1, Autosomal Dominant |
GLUT1 deficiency syndrome | SLC2A1 | GLUT1 deficiency syndrome-1, Autosomal Recessive |
Glutaric aciduria type I | GCDH | Glutaric aciduria, type I |
Glycogen storage disease type I | G6PC1 | Glycogen storage disease type Ia |
Glycogen storage disease type I | SLC37A4 | Glycogen storage disease type Ib and 1c |
Glycogen storage disease type II (Pompe Disease) | GAA | Glycogen storage disease type II |
Glycogen storage disease type III | AGL | Glycogen storage disease type III |
Griscelli Syndrome | RAB27A | Griscelli syndrome, type 2 |
Growth hormone receptor deficiency | GHR | Growth hormone receptor deficiency |
Growth hormone-secreting pituitary adenoma-2 | GPR101 | Growth hormone-secreting pituitary adenoma-2 |
Haemophilia A | F8 | Haemophilia A |
Haemophilia B | F9 | Haemophilia B |
Hepatic venoocclusive disease with immunodeficiency | SP110 | Hepatic venoocclusive disease with immunodeficiency |
Hepatoerythropoietic porphyria | UROD | Porphyria, hepatoerythropoietic |
Hereditary folate malabsorption | SLC46A1 | Hereditary folate malabsorption |
Hereditary fructose intolerance | ALDOB | Hereditary fructose intolerance |
Heritable Retinoblastoma | RB1 | Retinoblastoma |
Hermansky-Pudlak syndrome | AP3B1 | Hermansky-Pudlak syndrome 2 |
Hermansky-Pudlak syndrome | AP3D1 | Hermansky-Pudlak syndrome 10 |
HMG-CoA lyase deficiency | HMGCL | HMG-CoA lyase deficiency |
HMG-CoA synthase-2 deficiency | HMGCS2 | HMG-CoA synthase-2 deficiency |
Holocarboxylase synthetase deficiency | HLCS | Holocarboxylase synthetase deficiency |
Homocystinuria | CBS | Homocystinuria, B6-responsive and nonresponsive types |
Homocystinuria-megaloblastic anaemia | MTRR | Homocystinuria-megaloblastic anaemia, cbl E type |
Homocystinuria-megaloblastic anaemia | MTR | Homocystinuria-megaloblastic anaemia, cblG complementation type |
Homozygous Familial hypercholesterolaemia | LDLR | Homozygous Familial hypercholesterolaemia-1 |
Homozygous Familial hypercholesterolaemia | LDLRAP1 | Homozygous Familial hypercholesterolaemia-4 |
Homozygous Familial hypercholesterolaemia | APOB | Hypercholesterolaemia, familial, 2 autosomal recessive |
Homozygous Familial hypercholesterolaemia | PCSK9 | Familial hypercholesterolaemia-3 Autosomal Recessive |
Homozygous Variegate Porphyria | PPOX | Homozygous Variegate Porphyria |
Hyperinsulinism-hyperammonaemia syndrome | GLUD1 | Hyperinsulinism-hyperammonaemia syndrome |
Hypermanganesaemia with dystonia | SLC30A10 | Hypermanganesaemia with dystonia 1 |
Hyperornithinaemia-hyperammonaemia-homocitrullinuria syndrome | SLC25A15 | Hyperornithinemia-hyperammonemia-homocitrullinuria syndrome |
Hyperphenyalaninaemia | PTS | Hyperphenylalaninemia due to 6-pyruvoyl-tetrahydropterin synthase deficiency |
Hyperphenyalaninaemia | QDPR | Hyperphenylalaninemia due to dihydropteridine reductase deficiency |
Hypobetalipoproteinaemia | APOB | Hypobetalipoproteinaemia |
Hypohidrotic ectodermal dysplasia | EDA | Ectodermal dysplasia 1, hypohidrotic, X-linked |
Hypohidrotic ectodermal dysplasia | EDAR | Ectodermal dysplasia 10A, hypohidrotic/hair/nail type, autosomal dominant |
Hypohidrotic ectodermal dysplasia | EDAR | Ectodermal dysplasia 10B, hypohidrotic/hair/tooth type, autosomal recessive |
Hypohidrotic ectodermal dysplasia | EDARADD | Ectodermal dysplasia 11A, hypohidrotic/hair/tooth type, autosomal dominant |
Hypohidrotic ectodermal dysplasia | EDARADD | Ectodermal dysplasia 11B, hypohidrotic/hair/tooth type, autosomal recessive |
Hypophosphataemic rickets | PHEX | Hypophosphatemic rickets, X-linked dominant |
Hypophosphataemic rickets | FGF23 | Hypophosphatemic rickets, autosomal dominant |
Hypophosphataemic rickets | SLC34A3 | Hypophosphatemic rickets with hypercalciuria |
Hypophosphataemic rickets | DMP1 | Hypophosphatemic rickets, AR |
Hypophosphatasia | ALPL | Autosomal recessive hypophosphatasia |
IMAGE syndrome | CDKN1C | IMAGE syndrome |
IMAGE-I syndrome | POLE | IMAGE-I syndrome |
Imerslund-Grasbeck syndrome | CUBN | Imerslund-Grasbeck syndrome 1 |
Imerslund-Grasbeck syndrome | AMN | Imerslund-Grasbeck syndrome 2 |
Immunodeficiency | STAT1 | Immunodeficiency 31B |
Immunodeficiency | LCK | immunodeficiency 22 |
Immunodeficiency | FOXN1 | T-cell immunodeficiency, congenital alopecia, and nail dystrophy |
Immunodeficiency | PNP | Immunodeficiency due to purine nucleoside phosphorylase deficiency |
Immunodeficiency | PRKDC | Immunodeficiency 26, with or without neurologic abnormalities |
Immunodeficiency | LAT | Immunodeficiency 52 |
Immunodeficiency | DOCK2 | Immunodeficiency 40 |
Immunodeficiency | RAC2 | Immunodeficiency 73B |
Immunodeficiency | IFNGR1 | Immunodeficiency 27A, mycobacteriosis, Autosomal dominant |
Immunodeficiency | IFNGR1 | Immunodeficiency 27A, mycobacteriosis, autosomal recessive |
Immunodeficiency | IFNGR2 | Immunodeficiency 28, mycobacteriosis |
Immunodeficiency | FCHO1 | Immunodeficiency 76 |
Immunodeficiency | IKBKB | Immunodeficiency 15B |
Immunodeficiency | CTPS1 | Immunodeficiency 24 |
Immunodeficiency | IRAK4 | IRAK4 deficiency |
Immunodeficiency | MYD88 | Immunodeficiency 68 |
Immunodeficiency | STK4 | STK4 associated T-cell immunodeficiency, recurrent infections, autoimmunity, and cardiac malformations |
Immunodeficiency | LIG1 | LIG1 associated immunodeficiency |
Immunodeficiency | MAGT1 | X-linked Immunodeficiency with magnesium defect, Epstein-Barr virus infection and neoplasia |
Immunodeficiency | RASGRP1 | Immunodeficiency 64 |
Immunodeficiency | IRF8 | Immunodeficiency 32B |
Immunodeficiency | MCM4 | Immunodeficiency 54 |
Immunodeficiency | ARPC1B | Platelet abnormalities with eosinophilia and immune-mediated inflammatory disease |
Immunodeficiency with hyper-IgM | CD40 | Immunodeficiency with hyper-IgM, type 3 |
Immunodeficiency with hyper-IgM | CD40LG | X-linked immunodeficiency with hyper-IgM type 1 |
Immunodeficiency with lymphoproliferation and autoimmunity | IL2RA | Immunodeficiency 41 with lymphoproliferation and autoimmunity |
Immunodeficiency with lymphoproliferation and autoimmunity | IL2RB | Immunodeficiency 63 with lymphoproliferation and autoimmunity |
Immunodeficiency-centromeric instability-facial anomalies syndrome | DNMT3B | Immunodeficiency-centromeric instability-facial anomalies syndrome 1 |
Immunodeficiency-centromeric instability-facial anomalies syndrome | ZBTB24 | Immunodeficiency-centromeric instability-facial anomalies syndrome 2 |
Immunodeficiency-centromeric instability-facial anomalies syndrome | CDCA7 | Immunodeficiency-centromeric instability-facial anomalies syndrome 3 |
Immunodeficiency-centromeric instability-facial anomalies syndrome | HELLS | Immunodeficiency-centromeric instability-facial anomalies syndrome 4 |
Insulin-like growth factor I deficiency | IGF1 | Insulin-like growth factor I deficiency |
Intestinal hypomagnesaemia | TRPM6 | Hypomagnesemia 1, intestinal |
Intrinsic factor deficiency | CBLIF | Intrinsic factor deficiency |
Isolated growth hormone deficiency | GH1 | Isolated growth hormone deficiency type 1A, autosomal recessive |
Isolated growth hormone deficiency | GH1 | Isolated growth hormone deficiency type 1B, autosomal recessive |
Isolated growth hormone deficiency | GH1 | Isolated growth hormone deficiency type II, autosomal dominant |
Isolated growth hormone deficiency | GHRHR | Isolated growth hormone deficiency type 4 |
Isolated growth hormone deficiency | RNPC3 | RNPC3 associated growth hormone deficiency |
Isolated methylmalonic acidaemia | MMAA | Methylmalonic aciduria, vitamin B12-responsive, cblA type |
Isolated methylmalonic acidaemia | MMUT | Methylmalonic acidemia, mut(0) type |
Isolated methylmalonic acidaemia | MMADHC | Methylmalonic aciduria, cblD type, variant 2 |
Isolated methylmalonic acidaemia | MMAB | Methylmalonic aciduria, vitamin B12-responsive, cblB type |
Isolated methylmalonic acidaemia | MCEE | Methylmalonyl-CoA epimerase deficiency |
Isovaleric acidaemia | IVD | Isovaleric acidaemia |