The present invention relates to a prodrug or a pharmaceutically acceptable salt thereof comprising a drug linker conjugate D-L, wherein -D is an amine containing biologically active moiety; and -L is a non-biologically active linker moiety -L.sup.1 represented by formula (I):

##STR00001##

wherein the dashed line indicates the attachment to the amine of the biologically active moiety and wherein R.sup.1, R.sup.1a, R.sup.2, R.sup.2a, R.sup.3, R.sup.3a, X, X.sup.1, X.sup.2, X.sup.3 have the meaning as indicated in the description and the claims and wherein L.sup.1 is substituted with one to four groups L.sup.2-Z and optionally further substituted, provided that the hydrogen marked with the asterisk in formula (I) is not replaced by a substituent; wherein L.sup.2 is a single chemical bond or a spacer; and Z is a carrier group. The invention also relates to A-L, wherein A is a leaving group, pharmaceutical composition comprising said prodrugs and their use as medicaments.

The present invention provides compounds, pharmaceutically acceptable compositions thereof, and methods of using the same.

The present application provides bifunctional compounds of Formula (X):

##STR00001##

or an enantiomer, diastereomer, or stereoisomer thereof, or pharmaceutically acceptable salt, hydrate, solvate, or prodrug thereof, which act as protein degradation inducing moieties for protein kinases. The present application also relates to methods for the targeted degradation of one or more protein kinases through the use of the bifunctional compounds that link a ubiquitin ligase-binding moiety to a ligand that is capable of binding to one or more protein kinases which can be utilized in the treatment of disorders modulated by protein kinases.

Among other things, the present disclosure provides technologies for site-directed conjugation of various moieties of interest to target agents. In some embodiments, the present disclosure utilizes target binding moieties to provide high conjugation efficiency and selectivity. In some embodiments, provided technologies are useful for preparing antibody conjugates.

Disclosed are cyclic γ-amino acid peptide compounds, methods of using said compounds, and kits comprising said compounds. More specifically, disclosed are human epidermal growth factor receptor 2 (HER2) specific cyclic γ-amino acid peptide compounds, methods of using said compounds in the treatment of cell proliferative diseases or disorders, methods of detecting HER2 using the compounds, and kits comprising the compounds.

Disclosed herein are serine threonine kinase (AKT) degradation/disruption compounds including an AKT ligand, a degradation/disruption tag, and a linker, and methods of using such compounds in the treatment of AKT-mediated diseases.

The present disclosure relates to bifunctional compounds, which find utility as modulators of estrogen receptor (target protein). In particular, the present disclosure is directed to bifunctional compounds, which contain on one end at least one of a Von Hippel-Lindau ligand, a cereblon ligand, inhibitors of apoptosis proteins ligand, mouse double-minute homolog 2 ligand, or a combination thereof, which binds to the respective E3 ubiquitin ligase, and on the other end a moiety which binds the target protein, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of target protein. The present disclosure exhibits a broad range of pharmacological activities associated with degradation/inhibition of target protein. Diseases or disorders that result from aggregation or accumulation of the target protein are treated or prevented with compounds and compositions of the present disclosure.

Among other things, the present disclosure provides designed PNPLA3 oligonucleotides, compositions, and methods thereof. In some embodiments, provided oligonucleotide compositions provide improved single-stranded RNA interference and/or RNase H-mediated knockdown. Among other things, the present disclosure encompasses the recognition that structural elements of oligonucleotides, such as base sequence, chemical modifications (e.g., modifications of sugar, base, and/or internucleotidic linkages) or N patterns thereof, conjugation with additional chemical moieties, and/or stereochemistry [e.g., stereochemistry of backbone chiral centers (chiral internucleotidic linkages)], and/or patterns thereof, can have significant impact on oligonucleotide properties and activities, e.g., RNA interference (RNAi) activity, stability, delivery, etc. In some embodiments, the present disclosure provides methods for treatment of diseases using provided oligonucleotide compositions, for example, in RNA interference and/or RNase H-mediated knockdown.

Synthetic αvβ6 integrin ligands of Formula I having serum stability and affinity for integrin αvβ6, which is a receptor expressed in a variety of cell types, are described. The described ligands are useful for delivering cargo molecules, such as RNAi agents or other oligonucleotide-based compounds, to cells that express integrin αvβ6, and thereby facilitating the uptake of the cargo molecules into these cells. Compositions that include αvβ6 integrin ligands and methods of use are also described. ##STR00001##

Described herein are compositions and methods for the treatment of ocular surface disorders including meibomian gland dysfunction, blepharitis, dry eye disease and other inflammatory and/or infectious disease of the anterior surface of the eye. Said compositions and methods comprise keratolytic conjugates which demonstrate keratolytic activity, and anti-inflammatory or other desirable activities. Topical administration of said compositions to the eyelid margin or surrounding areas provides therapeutic benefit to patients suffering from ocular surface disorders.