8-K

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

FORM 8-K

 

 

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) June 2, 2014

 

 

Heron Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

 

 

 

Delaware   001-33221   94-2875566

(State or other jurisdiction

of incorporation)

 

(Commission

File Number)

 

(I.R.S. Employer

Identification No.)

 

123 Saginaw Drive

Redwood City CA

  94063
(Address of principal executive offices)   (Zip Code)

Registrant’s telephone number, including area code (650) 366-2626

N/A

(Former name or former address, if changed since last report)

 

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

 

¨   Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

 

¨   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

 

¨   Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

 

¨   Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

 

 

 


ITEM 8.01 Other Events.

On June 2, 2014, Heron Therapeutics, Inc. (the “Company”) issued a press release regarding the Company’s planned resubmission of its NDA for SUSTOL™. A copy of the press release is attached hereto as Exhibit 99.1.

The Company will deliver a corporate presentation at the Jefferies Healthcare Conference on June 2, 2014. The slides from the presentation are attached hereto as Exhibit 99.2. The attached materials have also been posted on the Company’s website at www.herontx.com. The Company does not undertake to update this presentation.

 

ITEM 9.01 Financial Statements and Exhibits.

(d) Exhibits.

 

Exhibit

No.

  

Description

99.1    Press Release, dated June 2, 2014
99.2    Corporate Presentation, dated June 2, 2014

 

2


SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 

      Heron Therapeutics, Inc.
Date: June 2, 2014      

/s/ Brian G. Drazba

      Brian G. Drazba
      Vice President, Finance and Chief Financial Officer

 

3

EX-99.1

Exhibit 99.1

 

LOGO

Heron Therapeutics Provides Update on SUSTOL™ Program

- SUSTOL™ Phase 3 study in delayed-HEC patients progressing rapidly – over 100 site locations opened in first two months

- Based on faster than expected start-up, Heron now plans to include delayed-HEC results in NDA resubmission planned for fourth quarter

REDWOOD CITY, Calif. – June 2, 2014 – Heron Therapeutics, Inc. (NASDAQ: HRTX), a specialty pharmaceutical company, announced today that it has achieved a rapid start-up of its ongoing Phase 3 clinical trial of SUSTOL™ (granisetron) for the prevention of delayed-onset chemotherapy-induced nausea and vomiting (CINV) in patients receiving highly emetogenic chemotherapy (HEC).

As a consequence of the rapid start-up, results of the delayed-HEC study are anticipated earlier than previously projected and the Company now plans to include these results in its resubmission of the new drug application (NDA) for SUSTOL to the U.S. Food and Drug Administration (FDA). To accommodate the inclusion of the delayed-HEC study, Heron plans to resubmit the NDA in the fourth quarter of 2014 versus the Company’s previous projection of a mid-year 2014 resubmission. Subject to approval by FDA, if the study is successful, it should enable the inclusion of a delayed-HEC indication in the SUSTOL label at the time of launch of SUSTOL rather than approximately a year following launch, as previously expected.

“I’m very pleased with the excellent start to the delayed-HEC study,” commented Barry D. Quart, Pharm.D., Chief Executive Officer of Heron Therapeutics. “The planned inclusion in our NDA resubmission of data regarding the safety and efficacy of SUSTOL in the delayed-HEC setting gives us the potential to launch SUSTOL with a label that is significantly differentiated from currently available therapies. Most importantly, this could enable us to immediately address a significant unmet medical need, as there is currently no 5-HT3 receptor antagonist approved for the treatment of delayed-onset CINV in patients receiving HEC regimens.”

Dr. Quart continued, “While we have successfully completed the Human Factors Validation study and all other requirements for resubmitting the SUSTOL NDA, we believe postponing the resubmission to include the delayed-HEC results will be well worth the long-term benefit of launching SUSTOL with the broadest label.”


About SUSTOL™

Heron’s lead product candidate, SUSTOL™ (granisetron), is being developed for the prevention of both acute- and delayed-onset chemotherapy-induced nausea and vomiting (CINV). One of the most debilitating side effects of cancer chemotherapy, CINV is a leading cause of premature discontinuation of treatment. There is only one injectable 5-HT3 antagonist approved for the prevention of delayed-onset CINV in patients receiving moderately emetogenic chemotherapy (MEC); none are approved for delayed-onset CINV in patients receiving highly emetogenic chemotherapy (HEC). SUSTOL contains the 5-HT3 receptor antagonist granisetron formulated in the Company’s proprietary Biochronomer™ polymer-based drug delivery platform, which allows therapeutic drug levels to be maintained for five days with a single subcutaneous injection. Currently available intravenous and oral formulations of granisetron are approved only for the prevention of acute-onset CINV. Granisetron was selected for SUSTOL because it is widely prescribed by physicians based on a well-established record of safety and efficacy.

About Heron’s Post-Surgical Pain Program

Heron is utilizing its proprietary Biochronomer™ polymer-based drug delivery platform to develop drugs designed to extend the duration of action of known active ingredients to address important unmet medical needs. The Company has initiated full development of an established local anesthetic for the treatment of post-surgical pain formulated with its Biochronomer extended release technology. In animal models of post-surgical pain, the Company’s drug candidates demonstrated statistically significant pain relief for three days, representing the potential to significantly reduce the need for opiates post-surgery and the length of post-surgical hospital stays. Heron’s lead product candidate in this program, HTX-011, is a unique combination of local analgesic agent bupivacaine and the anti-inflammatory drug meloxicam utilizing its Biochronomer extended release technology. Heron expects to move this program into human clinical studies in the second half of 2014.

About Heron Therapeutics, Inc.

Heron Therapeutics, Inc. (formerly A.P. Pharma, Inc.) is a specialty pharmaceutical company developing products using its proprietary Biochronomer™ polymer-based drug delivery platform. This drug delivery platform is designed to improve the therapeutic profile of injectable pharmaceuticals by converting them from products that must be injected once or twice per day to products that need to be injected only once every one or two weeks.

 

2


Forward Looking Statements

This news release contains “forward-looking statements” as defined by the Private Securities Litigation Reform Act of 1995. These forward-looking statements involve risks and uncertainties, including uncertainties associated with the potential approval of SUSTOL™ and the potential timing for such approval, if approved at all; risks relating to progress in research and development of HTX-011, including the timing of planned toxicology and clinical studies; risks related to other programs; risks related to the launch and acceptance of new products and other risks and uncertainties identified in the Company’s filings with the Securities and Exchange Commission. We caution investors that forward-looking statements reflect our analysis only on their stated date. We do not intend to update them except as required by law.

Contacts

Investor Relations Contact:

Jennifer Capuzelo, 858-703-6063

jcapuzelo@herontx.com

and

Corporate Contact:

Heron Therapeutics, Inc.

Stephen R. Davis, 650-366-2626

Executive Vice President and Chief Operating Officer

###

 

3

EX-99.2

Exhibit 99.2

 

LOGO

 

Company Update

June 2014

Exhibit 99.2


LOGO

 

Legal Disclaimer

This presentation contains “forward -looking statements” as defined by the Private Securities Litigation Reform Act of 1995. These forward -looking statements involve risks and uncertainties, including uncertainties associated with timely development, approval, launch and acceptance of new products, satisfactory completion of clinical studies, establishment of new corporate alliances, progress in research and development programs and other risks and uncertainties identified in the Company’s filings with the Securities and Exchange Commission. Actual results may differ materially from the results expected in our forward looking statements. We caution investors that forward -looking statements reflect our analysis only on their stated date. We do not intend to update them except as required by law.

2


LOGO

 

Highlights

Lead product candidate, SUSTOLTM, is a long-acting, injectable product for the prevention of chemotherapy -induced nausea and vomiting (CINV)

_ Shown to be non-inferior to market leader Aloxi® in 1,341-patient, randomized, controlled, Phase 3 study

_ On-going 1000 patient study in patients receiving highly emetogenic chemotherapy (HEC) is designed to obtain a “delayed HEC” indication

_ No 5-HT3 agent is approved for delayed HEC

SUSTOL targets a large market opportunity, with approximately 7 million doses of chemotherapy annually in US alone*

Leveraging our Biochronomer drug delivery technology and commercial expertise for other opportunities:

_ Long-acting local anesthetic-NSAID combination for post-surgical pain in development

3 *TDR August 2006 internal report


LOGO

 

SUSTOL CLINICAL SUMMARY


LOGO

 

5-Day Profile: APF530 Pharmacokinetics

Granisetron is released rapidly following injection of APF530 and continues to be released over a 5-day period, providing long-acting coverage for CINV

(ng/mL) 20 n granisetro 15 of All subjects (n= 18) n mean ± SEM concentratio 10

5 Minimum Plasma therapeutic concentration of granisetron*

0

0 24 48 72 96 120 144 168

Time after Dosing (h)

*Data from patent application 20120258164 for transdermal granisetron

5


LOGO

 

SUSTOL Pivotal Phase 3 Study Overview

Randomized, controlled, multi-center study

1,341 patients in primary efficacy population

Two doses of APF530 (5 mg and 10 mg granisetron) compared to the approved dose of Aloxi (results from 10 mg dose group presented)

Patients stratified by type of chemotherapy regimen: moderately emetogenic (MEC) or highly emetogenic (HEC)

Primary end point compared complete response between groups in both the acute (day 1) and delayed (days 2-5) phase

_ Complete response defined as no emesis and no rescue medications

_ ±15% margin used to establish non-inferiority

6


LOGO

 

Primary Efficacy Results: Complete Response

Patients Receiving Moderately Emetogenic Chemotherapy

100.0 -´ +´

(%) 90.0

75.0 76.9 ates 80.0

70.0

R

57.2 58.5

60.0

50.0 Acute

Response 40.0

APF530 10mg

30.0

Delayed

20.0

Complete 10.0

00. mg mg mgmg . 2510 . 2510 0 0

Aloxi APF530 Aloxi APF530 -15 -10 -5 0 5 10 15

Acute Delayed Difference in Complete Response APF530 -Aloxi (97.5% CI)

7


LOGO

 

Primary Efficacy Results: Complete Response

Patients Receiving Highly Emetogenic Chemotherapy

100 -´ +´

90

(%) 80.7 81.3

80

Rates 70 64.3 67.1

60 50

Response 40

30 20

Complete 10

0 mg mg mgmg 25 .10 . 2510 0 0

Aloxi APF530 Aloxi APF530 -15 -10 -5 0 5 10 15

Acute Delayed Difference in Complete Response APF530 -Aloxi (98.33% CI)

8


LOGO

 

Safety Summary

Cycle 1 Safety Results APF530 10 mg1 Aloxi 0.25 mg N % N % Drug Related Serious Adverse Events 0 0 0 0 Discontinued Due to Adverse Event 1 0.2 0 0 Frequent Adverse Events Gastrointestinal Disorders

Constipation 72 15.4 62 13.4

Diarrhea 44 9.4 39 8.4

Abdominal pain . . Nervous System Headache 47 10.0 45 9.7 Injection Site2 Placebo (NaCl)

Bruising 93 19.9 41 8.9

Erythema (redness) 51 10.9 14 3.0 Nodule (lump) 50 10.7 3 0.6

Pain 33 7.1 5 1.1

“1 Safety results with the 5 mg dose of APF530 studied in separate arm of the phase 3 study are not included

“2 >90% of injection site reactions were reported as mild; one patient discontinued due to injection site reaction

9


LOGO

 

FDA-Requested ASCO 2011 Reanalysis Improves Difference Between SUSTOL and Aloxiin HEC Patients

Protocol Specified HEC Population ASCO 2011 Guideline HEC Population

100 100

90 90

(%) 81 81 (%)

80 80 75

ates 67 ates 67

70 64 70

R R

56

60 60

51

50 50

Response 40 Response 40

30 30

20 20

Complete 10 Complete 10

0 0 mg mg mg mgmgmg mg mg

25 10 25 10 25 . 10 . 2510

. .

0 0 0 0

Aloxi APF530 Aloxi APF530 Aloxi APF530 Aloxi APF530

Acute Delayed Acute Delayed

10


LOGO

 

Largest Differences Between Arms is Seen With Most Difficult Chemo Regimens 1

CR Rates by Treatment

Chemotherapeutic Regimen APF530 10 mg Aloxi 0.25 mg

Cyclophosphamide/Doxorubicin 70.7% 65.7% Acute Moderately All other regimens 84.4% 85.0% Emetogenic Cyclophosphamide/Doxorubicin 47.4% 46.3% Delayed

All other regimens 72.9% 70.0% Cisplatin regimens 81.1% 75.5% Acute Carboplatin/Paclitaxel 85.4% 89.8% Highly All other regimens 75.4% 67.6% Emetogenic Cisplatin regimens 66.0% 60.4% Delayed Carboplatin/Paclitaxel 70.8% 71.4% All other regimens 65.2% 57.4%

1Data from post-hoc analysis. Not statistically significant.

Highlighted HEC regimens were considered HEC in both protocol specified Hesketh and 2011 ASCO Guidelines

11


LOGO

 

Response Rates With Chemotherapy Classified as HEC by Both Hesketh and 2011 ASCO*

SUSTOL is 9-11% Better Than Aloxi in the Most Emetogenic Chemotherapy

90%

78% 80% 69%

70% 66% 60% 55% 50%

40% Aloxi SUSTOL 30% 20% 10% 0%

Acute

Delayed

*Cisplatin, carmustine, dacarbazine, dactinomycin, mechlorethamine, streptozotocin

12


LOGO

 

A Delayed-HEC Indication Would Provide Clear Differentiation in an Important Segment of the CINV Market

Distribution of Aloxi Sales*

HEC regimens account for ~20% (500K) of palonosetron administrations

HEC Minimal LEC

MEC

1 IntrinsiQ data from July 2012 - June 2013

13


LOGO

 

Phase 3 “MAGIC” Study

Superiority design assuming a CR rate of 65% in the control (ondansetron) arm, a binary endpoint (CR or no CR), a 2-sided alpha = 0.05 to test 65% vs 75%; for 90% power you need 880

evaluable patients Cycle 1

Ondansetron 0.15 mg/kg IV (up to 16 mg IV) d 1

+ fosaprepitant 150 mg IV d 1 + DEX

+ placebo SC d1

1000 patients scheduled to receive HEC* randomized

1:1 APF530 500 mg SC d 1

+ fosaprepitant 150 mg IV d 1 + DEX + placebo IV d 1

1. All subjects will receive dexamethasone 12 mg IV on day 1 and 8 mg PO BID on days 2-4

2. All subjects will be allowed to receive “rescue” medications as required at the discretion of their treating physician

*HEC agents as defined in the 2011 ASCO CINV guidelines.

14


LOGO

 

New SUSTOL Study Has a High Likelihood of Success Based on Previous Results

Study powered for a 10% difference between arms

20% difference is expected with the addition of fosaprepitant,

100 Projected

Standard of Care Phase 3 Study HEC Study Response

90

(%) with addition

80 87% of NK1 ^^

Study

Rate 70

powered

60 to show 10% difference:

50 65% vs 75%

Response 40

45% 65% 67% 75%

30 Complete 20

10 0

Ondansetron + Dex* Ondansetron + Dex APF530+Dex APF530 + Dex

+ Fosaprepitant* + Fosaprepitant**

^^Average Complete Response rate improvement when adding an NK-1 RA to a 5-HT3 RA and Dex is ~15 - 20% in the delayed HEC *Poll-Bigelli; Cancer, 97:12, 3090, 2003 **Projection of what would happen with a 20% increased response by addition of fosaprepitant to Sustol + Dex

15


LOGO

 

Study Start-up Faster Than Projected

117 site locations have drug

Enrollment is progressing well

Expect to complete this study and be able to file full report in 4Q2014 resubmission

FDA has previously agreed that a positive outcome from this study would be sufficient to obtain “delayed -HEC” indication

16


LOGO

 

Clinical Trial Site Activation Summary

117 Study Locations Have Drug

Active Awaiting SIV Awaiting IRB/CTA

17


LOGO

 

SUSTOL Has the Potential to be the Next Generation 5-HT3 Receptor Antagonist

5-HT3

RAs 1st generation 2nd generation 3rd generation ondansetron

Products palonosetron SUSTOL granisetron

Duration of Short acting Longer acting Long acting action ~ 8 hr half-life ~40 hr half-life PK profile 5-7 days

Prevention of CINV in

MEC - acute& delayed CINV MEC - acute & delayed CINV Indications emetogenic chemo including HEC - acute CINV HEC - acute & delayed CINV* high-dose cisplatin

*Obtaining delayed HEC will be based on completion of new clinical trial

18


LOGO

 

SUSTOL REGULATORY STATUS


LOGO

 

SUSTOL NDA Status

Submitted NDA in May 2009 under 505(b)(2) filing pathway

Received Complete Response Letter in March 2010

FDA raised major issues in multiple areas

Resubmitted NDA in September 2012

Received Complete Response Letter March 2013 raising three main issues:

CMC: correction of PAI issues and revision of one in-vitro release method

Requirement for Human Factors Validation Study with commercial product

Re-analysis of the existing Phase 3 study using theASCO 2011 guidelines for categorization of MEC and HEC

20


LOGO

 

How We Are Addressing the CRL

“ Chemistry, Manufacturing, and Controls

_ Sites with PAI issues have been eliminated from the supply chain, with work transferred to a well-established site with no PAI issues

“ Transition is complete, with secondary benefit of improvement in the COGS

_ New in-vitro release method has been developed and validated

_ Multiple validation batches of finished product have now been completed

“ Human Factors Validation Study

_ Successfully completed

“ Re-analysis of Phase 3 using new ASCO 2011 Guidelines

_ Re-analysis complete

_ Complete dataset and programs supplied to FDA and found acceptable

“ Re-submission is planned for 4Q2014 in order to include delayed -HEC study

21


LOGO

 

Obtaining Optimal Labeling Sooner Was the Reason for Changing Our Filing Strategy

Submitting the NDA with a positive Delayed -HEC Study could obtain labeling for all four quadrants of CINV >4-months faster than with an sNDA

2014 2015 2016

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1

Delayed -HEC Study

Original Plan

NDA sNDA for Delayed HEC

Approval for Acute and Delayed

Approval for Delayed HEC. MEC plus Acute HEC.

Revised Plan

Achieves the Delayed -HEC Study

Best Labeling

Sooner NDA Approval for All 4 Quadrants.

22


LOGO

 

SUSTOL COMMERCIAL OPPORTUNITY


LOGO

 

U. S. CINV Market Dynamics

Injectable Drugs for the Prevention of CINV

800,000 Number of Package Units Sold by Quarter

700,000 600,000 500,000 400,000 300,000 200,000 100,000

0

Q2’06 Q4’06 Q2’07 Q4’07 Q2’08 Q4’08 Q2’09 Q4’09 Q2’10 Q4’10 Q2’11 Q4’11 Q2’12 Q4’12 Q2’13 Q4’13

ALOXI ANZEMET KYTRIL KYTRIL Generic (GRANISETRON) ZOFRAN ZOFRAN Generic (ONDANSETRON) EMEND

* US Oncology data added starting 1/2009. Data is Package Units; Ondansetron units reflect only 2 mg/ml and 32mg/50 ml strength sizes

24


LOGO

 

HEC Regimens Represent a Significant Market Opportunity for SUSTOL

Of all HEC administrations, ~20% are given HEC regimens account for ~20% (500K) without concomitant IV 5-HT inconsistent

of palonosetron administrations with clinical guidelines

1,600,000

1,463,558 1,200,000

1,400,000

(annual) 1,000,000

1,200,000 Untreated with

188,988

IV 5HT3 1,000,000 800,000 800,000 317,915 Treated with administrations 600,000 generic IV 5HT3

600,000

497,256

451,490 palonosetron 400,000 Treated with

400,000

Aloxi 200,000 497,256 200,000 111,696

- -

HEC MEC LEC Minimal Annual HEC administrations

1 IntrinsiQ data from July 2012 _ June 2013

25


LOGO

 

POST-OPERATIVE PAIN PROGRAM


LOGO

 


LOGO

 

Goals for Pain Program

Develop products that provide a clear advantage compared to available therapies

Take advantage of the FDA’s current focus on reducing the use of opiates

Main goals of therapy for our post-operative pain program

_ Significantly reduce:

pain intensity for 3-4 days post-operatively opiate use length of hospital stay hospital readmissions due to pain

Target for product

_ Easy to use for a large variety of procedures Does not require refrigeration or special handling

28


LOGO

 

Biochronomer Bupivacaine/Meloxicam

Significantly Superior to EXPAREL at 24-72 Hours

Pig Post -Operative Pain Model

SalineControl(1) Biochronomer Bupivacaine (1)

Biochronomer Ropivacaine (1) Biochronomer Bupivacaine + Meloxicam (2)

Exparel (2) 100.0

90.0

Tolerated 80.0 (60gm) 70.0 60.0 50.0

Anima

40.0

30.0 20.0

10.0

Percentage of Maximal force 0.0

0 1 3 5 HOURS 24 48 72 96 120

1. Study #1; All studies used the post-operative pain model in pigs from Castle et al, 2013 EPJ

2. Study #2 compared < 1/2 expected human dose of Biochronomer bupivacaine/meloxicam formulation to the human dose of EXPAREL (40% smaller incision used with EXPAREL)

29 (n=4 pigs, except at 120 hrs for Study #2: preliminary results from 2 animals)


LOGO

 

A New Formulation of Bupivacaine + Meloxicam Has Been Added to Our Pain Program

In order to achieve near complete control of pain, it is necessary to target the hyperalgesia caused by inflammation during the first several days

A combination product using our Biochronomer technology was developed

Bupivacaine was selected for the combination product due to easier co-formulation characteristics; no need for refrigeration or special handling

Meloxicam was selected as the NSAID due to its high potency, good local tolerability and minimal effects of platelets

– Local tolerability of meloxicam is very good and did not differ from placebo, even when administered daily for 4 weeks (British Journal of Rheumatology 1996;35 (suppl. l): 44-50)

– The very low dose of meloxicam in our formulation is less than half of the no-effect dose for altering Thomboxane B2 formation or platelet aggregation (Journal of Clinical Pharmacology, 2002;42:881 -886)

Combination product produced significantly better pain control than the market leader EXPAREL in preclinical post-operative pain model

30


LOGO

 

POST-OPERATIVE PAIN PROGRAM COMMERCIAL OPPORTUNITY


LOGO

 

The Post-Operative Pain Market Represents an Attractive Opportunity for Product Development

Post-Operative “ Total procedures expected to grow from 25MM in 2012 to over 32MM by 2022 Pain Market “ Total sales are expected to grow from $3.1B in 2012 to $3.6B in 2022

Pain is a major driver of inpatient admissions and increased length of stay

High cost of

Costs of opioid addiction & opioid-related adverse eventsare significant concerns post-operative

Reimbursement will increasingly be tied to measures of quality and patient pain satisfaction ratings

MDs commonly combine analgesics to enhance efficacy and minimize AEs

Current

Local anesthetic (LA) use is common & expected to increase with the entry of long-

Treatment acting formulations

Paradigm

MDs cite EXPAREL duration of action to be only 24-48 hours

Physicians identified the top needs to be:

– Reliable, extended duration of action

Unmet Needs

– Further pain reduction vs. what they see with existing therapies

– Further reduction or elimination of opioid use

Source: Decision Resources Post-Operative Pain Physician Research

Initiative 2014 (N=30 qualitative interviews; N=184 quantitative survey)

32


LOGO

 

U.S. Post-Operative Pain Market

Treatment options have remained stable over the past decade and new therapies are expected to be dominated by reformulations of existing molecules

The total number of procedures is anticipated to increase 3% per year driven by aging population

Unmet needs include longer-acting local anesthetics, opioids with a more tolerable side-effect profile and less addictive properties, and less invasive delivery mechanisms

2012 Post-Op Pain Market (US only) 2021 Post-Op Pain Market (US only)

Antiepileptic Traditional Antiepileptic

Traditional Drugs NSAIDs; Drugs Local Emerging NSAIDs; 9% (AED); 9% (AED); anesthetics; Agents; 2%

1% Local 1% 9% anesthetics; 11% Selective Selective COX-2 Strong inhibitors; COX-2 Strong opioid 9% inhibitors; opioid analgesics; 5% analgesics; 53% 51% Simple Simple analgesics; analgesics; Dual-Acting 11% 13% Dual-Acting Opioids; Opioids; 8% 9%

2012 Total: $3.1B 2021 Total: $3.6B

Source: Decision Resources, Post-Operative Pain Pharmacor, May 2006;

33 Decision Resources, Acute Pain, December 2012


LOGO

 

A Wide Variety of High-Volume Procedures Require Post-Op Pain Management for up to 3Days or More

Timeframe of

Volume of % Using

Top Surgical Post-Op Pain % Using Procedure Procedures Local Specialty* Management NSAIDs Per Month Anesthetics (hours)†

Cholecystectomy (inpatient) General 10 25-72 50% 43% Arthroplasty knee (inpatient) Orthopedic 10 >72 71% 47% Hernia (inpatient) General 10 25-72 54% 48% Cesarean Section OB/GYN 10 25-72 56% 47% Arthroplasty knee (outpatient) Orthopedic 10 0-24 68% 49% Hip replacement, total and partial Orthopedic 9 >72 57% 43% Cholecystectomy (outpatient) General 9 0-24 54% 51% Treatment, fracture or dislocation of hip and femur (inpatient) Orthopedic 8 >72 43% 33% Hernia (outpatient) General 8 0-24 65% 57% Arthroplasty other than hip, knee, shoulder, or elbow Orthopedic 8 >72 60% 40% Other non-OR therapeutic procedures on musculoskeletal system Orthopedic 8 25-72 43% 42% Repair of toe Orthopedic 8 0-24 60% 41% Other therapeutic procedures on muscles and tendons Orthopedic 7 25-72 52% 48% Other fracture and dislocation procedure Orthopedic 7 >72 51% 39% Arthroplasty shoulder Orthopedic 6 >72 72% 49%

Source: Decision Resources Post-Operative Pain Physician Research Initiative 2014 (N=30 qualitative interviews; N=184 quantitative survey)

34


LOGO

 

³72 hour Duration of Action Seen as “Ideal” by Physicians , With 48 hours Minimally Acceptable

Ideal Duration of Efficacy for Long-Minimally Acceptable Duration of Acting Local Anesthetic Efficacy for Long-Acting Local Anesthetic

>5 days 2% 5 days 4% £ 24 hours 72 hours 4 days 12% 11% 9%

£ 24

48 hours hours 27% 44%

48 hours 72 hours 45% 46%

Source: Decision Resources Post-Operative Pain Physician Research

Initiative 2014 (N=30 qualitative interviews; N=184 quantitative survey)

35


LOGO

 

Local Anesthetic With Reliable 3-Day Duration of Action Would be an Important Advance

“With EXPAREL, although it is meant to last for up to 72 hours, I’m seeing more like 24-48 hours in my patients.” – Orthopedic Surgeon

“A local anesthetic with a consistent, reliable duration of action of 3 days would be extremely valuable.” – Anesthesiologist

Procedures mentioned by MDs where 3 days of post-operative pain management is critical

Orthopedic

Hip replacement

Knee replacement

Shoulder surgeries

Foot / ankle surgeries

Hand surgeries

Spinal procedures

Soft Tissue

Hernia

Appendectomy

Hysterectomy

Prostatectomy

Nephrectomy

Laparoscopic abdominal surgeries

Source: KOL interviews October 2013

36


LOGO

 

Across Procedures, Many MDs Expect the Use of Long-Acting Local Anesthetics to Increase

Use of Long-Acting Local Anesthetics in the Future, by Procedure

Arthroplasty knee (inpatient) 3% 49% 48% Hernia (inpatient) 7% 47% 46% Hip replacement, total and partial 3% 49% 48% Hernia (outpatient) 5% 41% 54%

Arthroplasty other than hip, knee,

7% 50% 43%

shoulder, or elbow

Cholecystectomy (inpatient) 6% 60% 35%

Other therapeutic procedures on

7% 60% 34%

muscles and tendons

Arthroplasty shoulder 2% 44% 53%

Repair of toe 5% 66% 28%

Other fracture and dislocation

6% 58% 37%

procedure

Treatment, fracture or dislocation of

6% 58% 36%

hip and femur (inpatient)

Other non-OR therapeutic

9% 62% 29% procedures on musculoskeletal &

Arthroplasty knee (outpatient) 5% 45% 49% Cholecystectomy (outpatient) 7% 60% 33% Cesarean Section 10% 53% 37%

0% 20% 40% 60% 80% 100%

Percentage of physicians indicating how frequently they expect to use long-acting local anesthetics in the future

Less frequently Same amount More frequently

“Minimizing opioid use by using long-acting local anesthetics is the trend. I think the long-acting local anesthetics have great promise in the future.”

– General surgeon 6

Source: Decision Resources Post-Operative Pain Physician Research Initiative 2014 (N=30 qualitative interviews; N=184 quantitative survey)

37


LOGO

 

Next Steps for Post-Operative Pain Program

Combination formulation has been selected

Starting Phase 1 enabling toxicology

Initiate Phase 1 with combination product in second half 2014

Assuming positive results from Phase 1, initiate Phase 2 program before the end of this year

Continue development of Biochronomer ropivacaine formulation focused on nerve block, where the inflammatory component of pain may not be relevant

38


LOGO

 

Heron Therapeutics pipeline offers significant opportunity for commercial value creation

Chemotherapy-induced nausea and vomiting

Large, concentrated commercial opportunity

MDs view a non-inferior SUSTOL profile as highly competitive with palonosetron

A differentiated profile, based on a successful outcome of the HEC study, would position SUSTOL as the next generation 5-HT3

_ Only 5-HT3 indicated for acute and delayed CINV in MEC and HEC regimens

_ Extended release profile provides CINV protection for full 5 days in MEC and HEC

_ Data showing sustained efficacy over multiple cycles and efficacy in palonosetron failures

_ Favorable safety with clean QT profile

HEC regimens represent a significant market opportunity

Post-operative

pain management

Large, growing market

Significant unmet needs remain

– Reduced pain

– Reduced opioid consumption and opioid-related AEs

– Reduced hospital LOS

MDs expect use of long-acting LAs to increase

EXPAREL represents meaningful advance over short-acting local anesthetics but DOA beyond 24 hours is questionable

Innovative product that delivers reliable 3-day duration of action would offer differentiated value

39


LOGO

 

Financial Summary

Summary Statement of Operations Three Months Ended (In thousands, except per share data) March 31, 2014

Revenue $ – Operating expenses 17,322 Other income (expenses) (216) Net loss $ (17,538) Net loss per share1 $(0.74)

Condensed Balance Sheet Data

March 31, 2014 (In thousands)

Cashandcash equivalents $ 57,475 Total assets $ 62,793 Total stockholders’ equity $ 55,409

1 Based on 23.7 million weighted average common shares outstanding for the period ended March 31, 2014 (1-for-20 reverse stock split in JAN2014).

40