chromosome 13q14 deletion syndrome [DOID:0060391]
A chromosomal deletion syndrome that is characterized by low birth weight, dysmorphic facies, limb defects, genital malformations and psychomotor developmental delay, has_material_basis_in deletion of the long arm of chromosome 13.
CD45 deficiency [DOID:0060014]
A severe combined immunodeficiency that is an autosomal recessive disease with T and B lymphocyte dysfunction, due to a large deletion at one allelle and a point mutation at the other. The point mutation resulted in the alteration of intervening sequence 13 donor splice site. The population of T lymphocytes is diminished and unresponsive to mitogen stimulation. The level of B lymphocyte numbers, serum immunoglobulin decreased with age.