The phrase "a fatal deficiency" is correct and usable in written English.
It can be used to describe a critical lack or shortcoming that could lead to serious consequences or failure in a particular context.
Example: "The project's failure was attributed to a fatal deficiency in its planning phase, which left many key issues unaddressed."
Alternatives: "a critical flaw" or "a serious shortcoming."
The halt was another setback to the fledgling field of gene therapy because the French experiment, in which 9 of 11 boys were essentially cured of a fatal immune deficiency, had been considered the first unequivocal success for the technique.
Therefore, an adequate and regular dietary intake is essential to prevent hypovitaminosis C and the potentially fatal deficiency disease scurvy (6).
Humans have lost the ability to synthesise ascorbate due to mutations in the gene encoding the terminal biosynthetic enzyme, and ascorbate must therefore be obtained regularly through the diet to prevent hypovitaminosis C and the potentially fatal deficiency disease scurvy.
In comparison to inorganic PCMs, organic PCMs can overcome a few of the most fatal deficiencies, including phase separation and super cooling (Qian et al. 2015b).
In the phylogenetic tree of ABCA subfamily proteins, ABCA3 is very close ABC12. 1 ABCA3 is known to aid lipid secretion from alveolar type II cells via lamellar granules, 8 and an ABCA3 deficiency recently was reported to underlie a fatal lung surfactant deficiency in newborns, 9 a condition that often leads to death shortly after birth.
We finally extend MNETME to random routing networks by proposing a new model of random routing which overcomes three fatal deficiencies of the existing model and it is easier, more practical and more precise.
For all the fatal deficiencies of Lord Devlin's own view of the limits of the law, his challenge is extremely difficult to meet.
Widespread inbreeding in Saudi Arabia has produced several genetic disorders, Saudi public health officials said, including the blood diseases of thalassemia, a potentially fatal hemoglobin deficiency, and sickle cell anemia.
Long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) deficiency is a fatal autosomal recessive metabolic disorder, presenting during infancy.
Recently, a study related HOIL1 (RBCK1) deficiency to a fatal human disorder with immunodeficiency, autoinflammation and amylopectinosis [ 33].
