Sesion Bibliografica: Inhibidores de la SGLT2

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Inhibidores de SGLT2.

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The kidneys filter and reabsorb 180 g of glucose per day in the nephrons by active transport 180 g glucose filtered each day

Glomerulus

Proximal tubule

S1

Distal tubule

Collecting duct

S2

Glucose filtration

SGLT2 90%

SGLT1 10%

S3

Glucose reabsorption Loop of Henle Up to ~90% of glucose is reabsorbed from the S1/S2 segments

~10% of glucose is reabsorbed from the S3 segment

Wright EM. Am J Physiol Renal Physiol 2001;280:F10–8; Lee YJ, et al. Kidney Int Suppl 2007;106:S27–35; Brown GK. J Inherit Metab Dis 2000;23:237–246.

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Special glucose transporters (SGLT) are responsible for this reabsorption in the kidneys


Sodium-glucose co-transporters (SGLTs) are present throughout the body Major site of action

Function

SGLT1

Small intestine, heart, trachea and kidneys

Co-transports sodium, glucose and galactose across the brush border of the intestine and proximal tubule of the kidneys

SGLT2

Kidney

Co-transports sodium and glucose in the S1 segment of the proximal tubule of the kidneys

SGLT3

Small intestine, uterus, lungs, thyroid and testis

Transports sodium (not glucose)

SGLT4

Small intestine, kidneys, liver, stomach and lung

Transports glucose and mannose

SGLT5

Kidneys

Unknown

SGLT6

Spinal cord, kidneys, brain and small intestine

Transports myoinositol and glucose

Bays H. Curr Med Res Opin 2009;25:671–681; Abdul-Ghani MA, et al. Endocr Pract 2008;14:782-790.

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Transporter


SGLT2 and GLUT2 mechanism of transport Basolateral membrane

Tubular lumen

Interstitial space

SGLT2 GLUT2

Na+ Glucose

Glucose Glucose Na+

Na+

K+ K+

Tight junction Lateral intercellular space Adapted from Wright EM, et al. Physiology 2004;19:370–376;

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Na+/K+ pump


SGLT2 inhibition reduces renal glucose reabsorption and increases glucose elimination

Glomerulus

Proximal tubule

Distal tubule

Collecting duct

S1

Glucose filtration

SGLT2

Reduced glucose reabsorption

SGLT1

S3

SGLT2 inhibitor

Loop of Henle

Increased glucose excretion

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Wright EM. Am J Physiol Renal Physiol 2001;280:F10–8; Lee YJ, et al. Kidney Int Suppl 2007;106:S27–35; Han S. Diabetes 2008;57:1723–1729.


Development of SGLT2 inhibitors The search for a potent, selective SGLT2 inhibitor‌.from apple trees to candidate drugs

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Discovery of phlorizin by French chemists in the early 1800s  Isolated from apple tree bark (1835)

 Glycosuric effect revealed (1865)

 Renal effects identified in rat (1903) and man (1933)

 Antidiabetic effect discovered (1987) and SGLT2 Ehrenkranz JRL, et al. Diabetes Metab Rev 2005;21:31–38.

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 Found to inhibit SGLT1


To make a long story short - from phlorizin to dapagliflozin - the best clinical candidate Replace with lipophilic group

Shorten spacer

Remove hydroxyl to increase lipophilicity Change position of attachment

Phlorizin

Excise intervening atom

Replace with a lipophilic small group

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Dapagliflozin

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Sergliflozin-A


Dapagliflozin – An extensive clinical program  14 Phase 3 double-blind, randomised, controlled clinical trials  >5000 randomised patients  >30% of patients originating from Europe

Early disease

Advanced Disease

Treatment-naive patients

Add-on after initial treatment failure

Combination with metformin as initial therapy

Versus SU - added to: • Metformin

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Safety and efficacy versus placebo: • Patients with moderate renal insufficiency

• Patients at increased risk of CV events

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Monotherapy versus placebo

Versus placebo - added to: • Metformin • Sulphonylurea (SU) • Insulin • TZD • DPP4 inhibitor

Special at-risk populations


Sustained long-term efficacy of dapagliflozin as add-on to metformin (1) Mean change from baseline in HbA1c (102 weeks) Week 24

Week 50

Week 102

Adjusted mean change from baseline at week 102 (95% CI)

0.2

0.02 (-0.20,0.23)

Adjusted mean change from baseline in HbA1c (%)

0.0

-0.2

-0.4

-0.48 (-0.68, -0.29) -0.6

-0.58 (-0.77, -0.39)

-0.8

-0.78 (-0.97, -0.60)

-1.0

Placebo

0

16

32

48

64

80

96

112

5 mg/d

Time (weeks) 10 mg/d Bailey CJ, et al. Lancet 2010;375:2223–2233. Bailey CJ et al. 71st ADA Scientific Sessions, San Diego, 24-28 June, 2011 [Abstract 988-P].

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2.5 mg/d

-1.2


Consistent reductions in body weight with dapagliflozin Baseline Weight

24-wk Monotherapy

24-wk add-on to Met2

52-wk add-on to Met3

24-wk add-on to Glim4

24 wk-add-on to Ins5

24-wk add-on to Pio6

24-wk Dapa + Met XR7

90.2kg

88kg

85.9kg

81.1kg

93.8kg

86.3kg

81.1kg

1.64

24- and 52-week adjusted  from baseline weight (kg)

1.44

0.02 -0.14

*

-0.72

-0.89

-1.36

-1.67 -2.19

-2.26 -2.86

-3.16 NS

*

-3.22

*

* *

*p <0.001 vs. comparator NS: not significant 1Ferrannini

E, et al. Diabetes Care 2010;33:2217–2224; 2Bailey CJ, et al. Lancet 2010;375:2223–2233; 3Nauck MA, et al. Diabetes Care 2011;34:2015-2022; K, et al. Diabetes Obes Metab 2011;13:928-938 5Wilding J, et al. Diabetes 2010;59 (Suppl 1):A21–A22 [Abstract 0078-OR]; 6Rosenstock J, et al. 71st ADA Scientific Sessions, San Diego, 24–28 June, 2011 [Abstract 0986-P]; 7Henry R, et al. 71st ADA Scientific Sessions, San Diego, 24-28 June, 2011 Abstract 307-OR. 4Strojek

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*

-3.33


Dapagliflozin reduces total body weight and fat mass at week 24 DXA: dual X-ray absorptiometry

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Langkilde A.M, Study D1690C00012. Internal Presentation January, 2011.


Blood pressure reductions consistently observed with dapagliflozin in phase III studies Mean changes in systolic blood pressure (mmHg) Monotherapy AM only1

Add-on to Met vs. SU2

Add-on to Met3

Add-on to SU4

Add-on to TZD5

48 week add-on to insulin6

1

0

-1

-2

-3

-4

-5 -6

1Ferrannini

E, et al. Diabetes Care 2010;33:2217-2224; 2Nauck MA, et al. Diabetes Care 2011;34:2015-22; 3Bailey CJ, et al. Lancet 2010;375:2223-33; K, et al. Diabetes Obes Metab 2011;13:928-38; 5Rosenstock J, et al. 71st ADA Scientific Sessions, San Diego, 24-28 June, 2011 [Abstract 0986-P]; 6Wilding J, et al. Diabetes 2010;59 (Suppl 1):A21-A22 [Abstract 0078-OR]. 4Strojek

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Week 24 or 48 mean change from baseline mmHg

2


Events of Genital Infections Summary of 102 weeks

24 weeks

102 weeks

10

Patients (%)

 All mild-to-moderate in intensity with dapa  Most responded to initial course of standard treatment

8.2

8 6

4.8

4 2 0

1.3

0.9 Dapa 10mg

Placebo

Dapa 10mg

Placebo

 Most patients who had an event had only one over 102 weeks (74.6% dapa vs 77.8% placebo)

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 Rarely led to discontinuation (0.2%)


Events of Urinary Tract Infections Summary  All mild-to-moderate in intensity with dapa

24 weeks

 Most responded to initial course of standard treatment

102 weeks

Patients (%)

10 7.7

8

6

6.3 4.3

3.7

Dapa 10mg

Placebo

4 2 0

Dapa 10mg

Placebo

 Rarely led to discontinuation (0.3%)  Most patients who had an event had only one over 102 weeks (74.6% of dapa vs 86.4% placebo)

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 Upper UTI were rare and balanced between groups


Dapagliflozin has a low propensity to cause hypoglycaemia in patients with type 2 diabetes 70 60 50 40 30 20 10 0 PLA

Pattern of hypoglycaemic episodes in relation to change in HbA1c

DAPA 10 mg

PLA

DAPA 10 mg

PLA

DAPA 10 mg

Monotherapy* (24 weeks)

Add-on to metformin (102 weeks)

Add-on to glimepiride (48 weeks)

DAPA PLA 10 mg

DAPA PLA 10 mg

DAPA PLA 10 mg

PLA DAPA 10 mg

Add-on to insulin Âą other OADS (48 weeks)

DAPA PLA 10 mg

GLI

DAPA

vs. glipizide (52 weeks)

GLI

DAPA

0.0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6

-0.8 -0.9

DAPA: dapagliflozin; GLIP: glipizide; PLA: placebo; OAD: oral antidiabetic drug. Rohwedder K, et al. 71st ADA Scientific Sessions, San Diego, 24-28 June, 2011 [Abstract 1042-P].

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-0.7

*Morning treatment groups only


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Add-on to Met Compared to SU

004

Results (continued) Glycemia HbA1c adjusted mean change from baseline with dapagliflozin was statistically non-inferior to glipizide (both −0.52%) at 52 weeks.3

Figure 2. Change in HbA1c over Time

Initial HbA1c reduction at 52 weeks was sustained with dapagliflozin but this effect had attenuated with glipizide at 104 weeks (Figure 2).  HbA1c difference vs glipizide at 104 weeks −0.18% (95% CI; −0.33, −0.03).

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Add-on to Met Compared to SU

004

Results (continued) Weight  Initial weight reduction with dapagliflozin and weight gain with glipizide at 52 weeks remained stable at 104 weeks (Figure 4).

Figure 4. Change in Total Body Weight over Time

 Weight difference vs glipizide at 104 weeks −5.06 kg (95% CI; −5.73, −4.4).

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All Disease Education materials must be reviewed in accordance with local review requirements


All Disease Education materials must be reviewed in accordance with local review requirements


All Disease Education materials must be reviewed in accordance with local review requirements


All Disease Education materials must be reviewed in accordance with local review requirements


Resumen. Nuevo grupo de tto oral para la diabetes tipo 2.

Eficacia similar a otros ADO, mรกs sostenibilidad de efecto que SU. No hipoglucemias.

Perdida de peso de entre 1-3kg Efectos adversos frecuentes de infecciones genitales y menos frecuentes urinarias. Combinable con otras drogas orales e incluso con insulina.

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