Implant related risk of revision not caused by an infection or metal on metal reaction can be addressed by the methods provided herein, including diagnosing implant related risk of revision, use of kits for such diagnostic purposes and compositions for use in the treatment of implant related risk of revision, in particular implant related risk of revision not caused by an infection or metal on metal reaction.

Methods of diagnosing and preventing bone loss and/or enhancing bone formation are disclosed. The invention additionally provides methods of diagnosing a predisposition to bone loss. The methods mathematically combine the information provided by imaging tests with the information provided by biomarkers to provide an index value. The index value is used for diagnosis of bone diseases, and to assess the progress of treatment of bone diseases.

Implant related risk of revision not caused by an infection or metal on metal reaction can be addressed by the methods provided herein, including diagnosing implant related risk of revision, use of kits for such diagnostic purposes and compositions for use in the treatment of implant related risk of revision, in particular implant related risk of revision not caused by an infection or metal on metal reaction.

This invention relates, in part, to unique and newly identified genetic polynucleotides involved in the process of bone remodeling; variants and derivatives of the polynucleotides and corresponding polypeptides; uses of the polynucleotides, polypeptides, variants and derivatives; and methods and compositions for the amelioration of symptoms caused by bone remodeling disorders. Disclosed in particular are, the isolation and identification of polynucleotides, polypeptides, variants and derivatives involved in osteoclast activity, validation of the identified polynucleotides for their potential as therapeutic targets and use of the polynucleotides, polypeptides, variants and derivatives for the amelioration of disease states and research purposes.

Disclosed are methods of identifying subjects with osteoporosis or osteopenia, subjects at risk for developing osteoporosis, osteopenia, and bone fractures, methods of evaluating the effectiveness of osteoporosis treatments in subjects with osteoporosis or osteopenia, and methods of selecting therapies for treating osteoporosis or osteopenia, using biomarkers.

This invention relates, in part, to unique and newly identified genetic polynucleotides involved in the process of bone remodeling, variants and derivatives of the polynucleotides and corresponding polypeptides, uses of the polynucleotides, polypeptides, variants and derivatives, and methods and compositions for the amelioration of symptoms caused by bone remodeling disorders. Disclosed in particular are the isolation and identification of polynucleotides polypeptides variants and derivatives involved in osteoclast activity, validation of the identified polynucleotides for their potential as therapeutic targets and use of the polynucleotides, polypeptides, variants and derivatives for the amelioration of disease states and research purposes.

Novel antibodies and antigen binding fragments that specifically binds to Siglec-15 are described herein. In some embodiments, the antibodies or antigen binding fragments may block the biological activity of Siglec-15 and are useful in composition for the treatment of bone loss, more particularly in bone diseases that have increased cell surface expression of Siglec-15, such as conditions where there is an increase in the bone degradative activity of osteoclasts. The invention also relates to cells expressing the antibodies or antigen binding fragments such as monoclonal, humanized or chimeric antibodies. Additionally, methods of detecting and treating bone loss, bone-related diseases or cancer using the antibodies and fragments are also disclosed.

There is provided an antibody that specifically binds to a peptide comprising the amino acid sequence N-terminal-GLGHN (SEQ ID NO 1), where the antibody binds to the sequence N-terminal-GLGHN (SEQ ID NO 1). The antibody can be used for diagnosis of for example bone sclerosis, fractures, chip fractures of the joint, avulsion fractures, bone bruise, osteoporosis, bone bruise, osteoporosis or cancer.

A method is for correcting a concentration of a bone turnover marker to obtain an adjusted value which gives an indication of an individual's bone health status or amount of changes occurred over time or by treatment while eliminating the influence of possible pre-analytical variability. The method includes: obtaining the concentration of the bone turnover marker of a sample; correcting the obtained concentration using a mathematical model which comprises at least three factors, different from the bone health status, such that for the adjusted value variabilities in the concentration of the bone turnover marker, that are caused by the at least three factors, are substantially filtered out by the mathematical model.

Provided herein is a method of suppressing osteoclast differentiation or function and/or bone resorption or destruction in a subject in need thereof and compositions therefore. In one embodiment, the method includes increasing the amount, expression, or activity of Foxo3 isoform 2 in the subject.