each R^x is independently —OC_1-6 aliphatic or —CR₂(OR);

each R is independently hydrogen or C_1-6 aliphatic;

each R^y is independently R^z, fluoro, chloro, —CN, or —OR;

each R^z is a C_1-6 aliphatic optionally substituted with one or more fluoro;

Ring T is selected from phenyl or a 5-9 membered mono- or bicyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ring T is further optionally substituted with 1-2 oxo groups;

L^x is —C(O)N(H)—, wherein either the carbon or nitrogen atom of —C(O)N(H)— is attached to Ring T;

X is a covalent bond

x is 0 or 1;

y is 0, 1, or 2;

L is a covalent bond or a bivalent, saturated or unsaturated, straight or branched C_1-30 hydrocarbon chain, wherein 0-6 methylene units of L are independently replaced by -Cy-, —CRF—, —CF₂—, —O—, —N(R)—, —OC(O)—, —C(O)O—, —C(O)—, —S(O)—, —S(O)₂—, —N(R)S(O)₂—, —S(O)₂N(R)—, —N(R)C(O)—, —C(O)N(R)—, —OC(O)N(R)—, —N(R)C(O)O—, wherein

each -Cy- is independently an optionally substituted bivalent ring selected from a 4-7 membered saturated or partially unsaturated carbocyclylenyl, a 4-11 membered saturated or partially unsaturated spiro carbocyclylenyl, a 4-7 membered saturated or partially unsaturated heterocyclylenyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur, a 4-11 membered saturated or partially unsaturated spiro heterocyclylenyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur, or an 8-10 membered bicyclic saturated or partially unsaturated heterocyclylenyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur, and

DIM is a degradation inducing moiety selected from a cereblon E3 ubiquitin ligase binding moiety of formula I-ccc-1:

or a pharmaceutically acceptable salt thereof, wherein:

X¹ is —C(O)—;

X^2a is —C(O)—;

X^3a is —CH₂— or —C(O)—;

R¹ is hydrogen;

each of R² is independently fluoro, chloro, C_1-4 aliphatic, or —OC_1-4 aliphatic;

Ring A^a is a fused 6-membered aryl containing 0-1 nitrogen atoms; and

m is 0, or 1.