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PGT-M conditions

This table shows all PGT-M conditions currently approved and awaiting consideration by the HFEA.

Please note that we are updating this database, and some approved conditions may not be displayed. If you are unsure if a condition has been approved or not, please contact

Download full approved condition list.

Condition name Status OMIM number Documents
Leber congenital amaurosis type 7 (autosomal recessive only) approved 613829
Leber congenital amaurosis type 8 approved 613835
Leber congenital amaurosis type 9 approved 608553
Leber's Hereditary Optic Neuropathy (LHON) / Lebers Optic atrophy approved 535000
Leigh Syndrome approved 256000
Leigh Syndrome (Infantile Subacute Necrotising Encephalopathy) due to COX IV deficiency approved 185620
Leigh syndrome (subacute necrotising encephalopathy of childhood) approved 516000, 516002, 516005, 516006
Leigh Syndrome, French Canadian type (LSFC) approved 220111
Lesch Nyhan syndrome approved 300322
Lethal congenital contracture syndrome 7 approved 616286
Lethal Congenital Contracture syndrome type 1 approved 253310
Lethal Congenital Contracture syndrome type 10 approved 617022
Lethal Congenital Contracture syndrome type 11 approved 617194
Lethal Congenital Contracture syndrome type 9 approved 616503
Lethal Multiple Pterygium Syndrome (LMPS) approved 253290
Leukaemia, acute myeloid, related to GATA2 mutation approved 601626
Leukocyte Adhesion Deficiency (Type I) (LAD)* approved 116920
Leukoencephalopathy with Vanishing White Matter approved 603896
Lewy body dementia approved 127750
Li-Fraumeni Syndrome 1 approved 151623